Updates to the node SDK docs and sample files

cherry-picking commit 70237c3.
Fix broken links and formatting issues on doc files
Include docker image and compose files to support docs
Update sample apps with environment settings
fix src and tag in dockerfile
fix docker image name in doc

Change-Id: Ife9ca8259b08b8a8c5bf55b67ec5ff33509db8ff
Signed-off-by: Christopher Ferris <chrisfer@us.ibm.com>

docs/nodeSDK/app-developer-env-setup.md

@@ -1,7 +1,7 @@
 # Setting up the Full Hyperledger fabric Developer's Environment
 
  * See [Setting Up The Development Environment](../dev-setup/devenv.md) to set up your development environment.
- 
+
  * The following commands are all issued from the vagrant environment. The following will open a terminal session:
 
 ```
@@ -47,4 +47,3 @@
  ```
    /opt/gopath/src/github.com/hyperledger/fabric/sdk/node/doc
  ```
-