Allow arbitrary template files

[frosty]

Our continuous integration server requires a build info JSON file to be present in the project's root folder (much like Travis CI's .travis.yml file). It would be nice if we could specify this as a template file (so we can automatically populate project / workspace names, etc) and just have it copied over. It doesn't necessarily need to be included in the Xcode project, just be present in the project root.

[gfontenot]

This actually seems like a much more flexible way of supporting #141. Maybe a templates key in the config? Something like:

templates:
  - <template-name>: <destination (relative to project root)>
  - travis.yml: .travis.yml
  - Gemfile: Gemfile
  - test.sh: test.sh

This is similar to the format for defining run script build phases.

[gfontenot]

Just merged this into master. It'll work as proposed here, and it'll be included in the next release. Thanks!

[frosty]

Wow, amazing! Thanks! Can't wait to try it out! :)