Merge pull request #108 from maxlinc/winrm_msgs

Winrm msgs
Set box_optional and parallel attributes
Report progress, scoped by machine
Merge pull request #128 from maxlinc/attributes

Set box_optional and parallel attributes
v0.1.10
v0.1.11dev
Update gemfiles
Update travis config - no more Ruby 1.9.3
README updates
Only test Windows on Vagrant 1.6+
Use built-in actions for SyncedFolders and WaitForCommunicator
Fix commands that were lost in a merge...