adding vagrantfile
adding the eunit framework.  after running run.sh, you can run popcorn:test/0 to execute unit tests
update
small change to help with a trivial optimization
Merge remote-tracking branch 'upstream/master'
adding log_stream_manager to remove the ets:tab2list and foreach inside the node_fsm log message function
Merge pull request #26 from lookio/master

Performance, tests, and more