Support of the .pro file extension for Prolog.
Merge branch 'master' of https://github.com/github/linguist into pro
Support of the .pp extension for Pascal
Rename Groovy sample file with a .gradle extension
Ignore files related to Cocoapods.

These include Podfile, Podfile.lock, and Pods/.
Only ignore Pods/ for CocoaPods.
Ignore everything in the Pods directory.
Testing Pods
Branches
Gem
Gem deps
Abort
Debug statements
Ignoring benchmark files
Pry for development.
Building language indexes
Deep diffing
Prettier print
Prettier print
test on all