Build operation is a little smarter about builds and reporting when they fail.
And report an error when xcodebuild isn't present.
Merge pull request #12 from rustle/master

DVBProjectManager
Merge branch 'master' of github.com:sgoodwin/DevBot
Silence unnecessary logging.
Make builds appear in a folder we know about when they succeed, grab a reference to the .app and.dSYM files. #4
Setup the operation to package the app.
Package the build results into an ipa file. #4.
Some notes about things I left out for now. #4
Attempt to upload to testflight when building and packaging are successful. #5