Merge tag 'v0.1.1'

v0.1.1
Allow building onto an identical branch

This means stripping an error message from a command that otherwise
succeeded. Without this, a command line that includes spaces and a
newline is passed to shelljs, which then hangs.
Merge pull request #4 from strongloop/feature/duplicate

Allow building onto an identical branch
v0.1.2
Merge branch 'release/0.1.2' into production