Remove HEAD from xctool
Remove HEAD from xctool

The HEAD commit apparently added a breaking change for our combination
of xcode/ios simulator/xctool on the travis stack.
This reverts xctool to use the current stable version (0.1.14) at
time of this commit, which works.

votinginfoproject/ios7-white-label-app,votinginfoproject/ios7-white-label-app