remove obsolete readme files

Signed-off-by: Vladimir Lavor <vlavor@cisco.com>

README.md

@@ -7,7 +7,7 @@
 [![GitHub license](https://img.shields.io/badge/license-Apache%20license%202.0-blue.svg)](https://github.com/ligato/cn-infra/blob/master/LICENSE.md)
 
 CN-Infra (cloud-native infrastructure) is a Golang framework for building
-control plane agents for [cloud-native Virtual Network Functions][4] It is
+control plane agents for cloud-native Virtual Network Functions It is
 basically a collection of components/libraries used in most control plane 
 agents tied together with a common life-cycle management mechanism.
 
@@ -23,49 +23,50 @@ Plugins in the current CN-Infra release provide functionality in one of
 the following functional areas:
 
 * **RPC** - allows to expose application's API:
-  - [GRPC](rpc/grpc) - handles GRPC requests and allows app plugins to define
+  - [GRPC][docs-grpc] - handles GRPC requests and allows app plugins to define
     their own GRPC services
-  - [REST](rpc/rest) - handles HTTP requests and allows app plugins to define
+  - [REST][docs-rest] - handles HTTP requests and allows app plugins to define
     their own REST APIs
-  - [Prometheus](rpc/prometheus) - serves Prometheus metrics via HTTP and allows
+  - Prometheus - serves Prometheus metrics via HTTP and allows
     app plugins to register their own collectors
 
 * **Data Stores** - provides a common data store API for app plugins (the 
     Data Broker) and back-end clients. The data store related plugins are:
-  - [Consul](db/keyval/consul) - key-value data store adpater for Consul
-  - [Etcd](db/keyval/etcd) - key-value data store adpater for Etcd
-  - [Redis](db/keyval/redis) - key-value data store adpater for Redis
-  - [Casssandra](db/sql/cassandra) - key-value data store adpater for Cassandra
+  - [Consul][docs-consul] - key-value data store adpater for Consul
+  - [Etcd][docs-etcd] - key-value data store adpater for Etcd
+  - [Redis][docs-redis] - key-value data store adpater for Redis
+  - [Casssandra][cassandra] - key-value data store adpater for Cassandra
+  - [FileDB][docs-filedb] - key-value data store using OS filesystem
 
 * **Messaging** - provides a common API and connectivity to message buses:
-  - [Kafka](messaging/kafka) - adapter for the Kafka message bus (built on top of
-    [Sarama](5))
+  - [Kafka][docs-kafka] - adapter for the Kafka message bus (built on top of
+    Sarama)
 
 * **Logging**:
-  - [Logrus wrapper](logging/logrus) - implements logging skeleton 
+  - [Logrus wrapper][logrus] - implements logging skeleton 
     using the Logrus library. An app writer can create multiple loggers -
     for example, each app plugin can have its own logger. Log level
     for each logger can be controlled individually at run time through
     the Log Manager REST API.
-  - [Log Manager](logging/logmanager) - allows the operator to set log
+  - [Log Manager][docs-logmanager] - allows the operator to set log
     level for each logger using a REST API.
 
 * **Health Monitoring** - Self health check mechanism between plugins 
     plus RPCs:
-  - [StatusCheck](health/statuscheck) - allows to monitor the status of plugins
+  - [StatusCheck][docs-statuscheck] - allows to monitor the status of plugins
     and exposes it via HTTP
-  - [Probe](health/probe) - callable remotely from K8s
+  - [Probe][probe] - callable remotely from K8s
 
 * **Miscellaneous** - value-add plugins supporting the operation of a 
     CN-Infra based application: 
-  - [Config](config) - helpers for loading plugin configuration.
-  - [Datasync](datasync/resync) - provides data resynchronization after HA 
+  - [Config][config] - helpers for loading plugin configuration.
+  - [Datasync][resync] - provides data resynchronization after HA 
     events (restart or connectivity restoration after an outage) for data
     stores, gRPC and REST.
-  - [IDX Map](idxmap) - reusable thread-safe map with advanced features:
+  - [IDX Map][idx-map] - reusable thread-safe map with advanced features:
     * multiple subscribers for watching changes in the map
     * secondary indexes
-  - [ServiceLabel](servicelabel) - provides setting and retrieval of a 
+  - [ServiceLabel][docs-service-label] - provides setting and retrieval of a 
       unique identifier for a CN-Infra based app. A cloud app typically needs
       a unique identifier so that it can differentiated from other instances 
       of the same app or from other apps (e.g. to have its own space in a kv 
@@ -77,12 +78,12 @@ the following functional areas:
 You can run this example code by using pre-build Docker images:
 
 For quick start with the VPP Agent, you can use pre-build Docker images with the Agent and VPP
-on [Dockerhub](https://hub.docker.com/r/ligato/dev-cn-infra/).
+on [Dockerhub][dockerhub].
 
 1. Run ETCD and Kafka on your host (e.g. in Docker 
-  [using this procedure](examples/simple-agent/README.md)).
+  [using this procedure][simple-agent]).
 
-2. Run cn-infra example [simple-agent](examples/simple-agent/agent.go).
+2. Run cn-infra example [simple-agent][simple-agent].
 ```
 docker pull ligato/dev-cn-infra
 docker run -it --name dev-cn-infra --rm ligato/dev-cn-infra
@@ -104,14 +105,14 @@ func main() {
 	}
 }
 ```
-You can find the above example [here](examples/simple-agent/agent.go), from where it can be 
+You can find the above example [here][simple-agent], from where it can be 
 compiled and run in your favorite environment.
 
 ## Documentation
 
-Detailed documentation (including tutorials) can be found [here](https://ligato.io/cn-infra).
+Detailed documentation (including tutorials) can be found [here][ligato].
 
-GoDocs can be browsed [online](https://godoc.org/github.com/ligato/cn-infra).
+GoDocs can be browsed [online][godocs].
 
 ## Architecture
 
@@ -129,7 +130,7 @@ The architecture of the CN-Infra framework is shown in the following figure.
 
 ![arch](docs/imgs/high_level_arch_cninfra.png "High Level Architecture of cn-infra")
 
-The CN-Infra framework consists of a **[Agent](agent)** that provides plugin
+The CN-Infra framework consists of a **[Agent][agent]** that provides plugin
 lifecycle management (initialization and graceful shutdown of plugins) 
 and a set of framework plugins. Note that the figure shows not only 
 CN-Infra plugins that are a part of the CN-Infra framework, but also 
@@ -142,8 +143,8 @@ The framework is modular and extensible. Plugins supporting new functionality
 existing set of CN-Infra framework plugins. Moreover, CN-Infra based apps
 can be built in layers: a set of app plugins together with CN-Infra plugins
 can form a new framework providing APIs/services to higher layer apps. 
-This approach was used in the [VPP Agent][3] - a management/control agent
-for [VPP][2] based software data planes.,
+This approach was used in the [VPP Agent][vpp-agent] - a management/control agent
+for [VPP][vpp] based software data planes.,
 
 Extending the code base does not mean that all plugins end up in all 
 apps - app writers can pick and choose only those framework plugins that 
@@ -156,8 +157,25 @@ app.
 
 If you are interested in contributing, please see the [contribution guidelines](CONTRIBUTING.md).
 
-[1]: https://12factor.net/
-[2]: https://fd.io
-[3]: https://github.com/ligato/vpp-agent
-[4]: docs/readmes/cn_virtual_function.md
-[5]: https://github.com/Shopify/sarama
+[agent]: agent
+[cassandra]: db/sql/cassandra
+[config]: config
+[dockerhub]: https://hub.docker.com/r/ligato/dev-cn-infra/
+[docs-consul]: https://docs.ligato.io/en/latest/plugins/db-plugins/#consul-plugin
+[docs-etcd]: https://docs.ligato.io/en/latest/plugins/db-plugins/#etcd-plugin
+[docs-grpc]: https://docs.ligato.io/en/latest/plugins/connection-plugins/#vpp-agent-grpc
+[docs-kafka]: https://docs.ligato.io/en/latest/plugins/plugin-overview/#messagingkafka
+[docs-logmanager]: https://docs.ligato.io/en/latest/plugins/infra-plugins/#log-manager
+[docs-statuscheck]: https://docs.ligato.io/en/latest/plugins/infra-plugins/#status-check
+[docs-redis]: https://docs.ligato.io/en/latest/plugins/db-plugins/#redis
+[docs-rest]: https://docs.ligato.io/en/latest/plugins/connection-plugins/#rest-plugin
+[docs-service-label]: https://docs.ligato.io/en/latest/plugins/infra-plugins/#service-label
+[godocs]: https://godoc.org/github.com/ligato/vpp-agent
+[idx-map]: idxmap
+[ligato]: https://docs.ligato.io
+[logrus]: logging/logrus
+[probe]: health/probe
+[resync]: datasync/resync
+[simple-agent]: examples/simple-agent/README.md
+[vpp]: https://fd.io
+[vpp-agent]: https://github.com/ligato/vpp-agent