Changed docs/nodeSDK/sample-standalone-app.md

Current doc instructs user to run app.js file with "node app"
which does not work. Updated doc contains cmd line run instructions
and edits to app.js file if user does not want to pass cmd line
arguments.

Fix Issue # FAB-576.

Change-Id: I57ca22527c815d69c7f2fd4e6d1994ffeee3dd43
Signed-off-by: Leonard Harley <[email protected]>

Author: lenh

docs/nodeSDK/sample-standalone-app.md

@@ -39,10 +39,10 @@ This section describes how to run a sample standalone Node.js application which
      npm install /opt/gopath/src/github.com/hyperledger/fabric/sdk/node
 ```
 
-* Run the application as follows:
+* To run the application :
 
 ```
-   node app
+     CORE_CHAINCODE_ID_NAME=mycc CORE_PEER_ADDRESS=0.0.0.0:7051 MEMBERSRVC_ADDRESS=0.0.0.0:7054 DEPLOY_MODE=dev node app
 ```
 
 Congratulations!  You've successfully run your first Hyperledger fabric application.