Update README

README.md

@@ -1,9 +1,48 @@
-osin-dynamodb
-==============
+# osin-dynamodb
+
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 This package implements the storage for [OSIN](https://github.com/RangelReale/osin) with [Amazon DynamoDB](https://aws.amazon.com/dynamodb/) using [aws-sdk-go](https://github.com/aws/aws-sdk-go).
 
+## Installation
+
+Install library with `go get github.com/uniplaces/osin-dynamodb`
+or with `glide get github.com/uniplaces/osin-dynamodb` is you use [glide](https://github.com/Masterminds/glide)
+
+## Usage
+
+```go
+import (
+	"github.com/aws/aws-sdk-go/aws"
+	"github.com/aws/aws-sdk-go/aws/session"
+	"github.com/aws/aws-sdk-go/service/dynamodb"
+	"github.com/uniplaces/osin-dynamodb"
+	"github.com/RangelReale/osin"
+	"os"
+)
+
+func main() {
+    // This is configuration for local DynamoDB instance used in tests,
+    // for details how to configure your real AWS DynamoDB connection check DynamoDB documentation
+	os.Clearenv()
+	os.Setenv("AWS_ACCESS_KEY_ID", "a")
+	os.Setenv("AWS_SECRET_ACCESS_KEY", "b")
+
+	svc := dynamodb.New(session.New(&aws.Config{
+		Endpoint: aws.String("http://localhost:4567"),
+		Region:   aws.String("us-west-1"),
+	}))
+
+	// You can use CreateStorageConfig helper to create configuration or you can create it by yourself
+	storageConfig := osindynamodb.CreateStorageConfig("oauth_table_prefix_")
+
+	// Initialization
+    store := osindynamodb.New(svc, storageConfig)
+    server := osin.NewServer(osin.NewServerConfig(), store)
+
+    // For further details how to use osin server check osin documentation
+}
+```