Updated third-party software dependencies

- Ruby has been updated from version 1.9.3 to version 2.0.0.
- CocoaPods has been updated from version 0.26.2 to version 0.27.1.
- CocoaPods's dependencies have been updated.
- Build init task has added a check to see if bundler is installed, and
  installs it if bundler is not on the system. Also, ruby versioning is
  explicitly checked and tasks abort if version is not 2.0.0.

Signed-off-by: Byron Sanchez <bfs5030@gmail.com>