Adding node version selection to the node deployment (batch script).
Addressing issue #204.
Remove redundant echo.
Fix space.
Renamed:
KUDU_SYNC_COMMAND --> KUDU_SYNC_CMD
KUDU_SELECT_NODE_VERSION_COMMAND --> KUDU_SELECT_NODE_VERSION_CMD
NPM_COMMAND --> NPM_CMD

Also fixed issue in bash script where when the KUDU_SYNC_CMD was set it was still overwritten.
Fix exit from function in batch file issue.
Added select node version part to bash script.
Fixed typo issue (missing $).
Added missing error redirect.
Added select node version validation to test.
Merge pull request #323 from amitapl/dev

Some fixes for site deploymentscript