Merge pull request #3 from anfeng/master

introduce: storm-yarn launch <config>
fix typo in readme command
Some improvements to help with multi-node hadoop
Merge pull request #4 from d2r/d2r-fix-multinode-hadoop

Some improvements to help with multi-node hadoop
Merge pull request #5 from anfeng/master
Merge pull request #4 from yahoo/master

merge changes from yahoo/storm-yarn