* master:
  [Specs] Minor fix for Command::Push.
  [Push] Use git! where possible.
  [Specs] fix for the fix that was supposed to fix Travis.
  [Specs] Fix for Travis issues.
  [Source] The name should be an attribute.
  [Specs] Fixed Travis errors related to Command::Repo.
  [Linter] Fixed minor bug.
  Update CHANGELOG.md
  Update lib/cocoapods/generator/acknowledgements/markdown.rb
  Update lib/cocoapods/generator/acknowledgements/markdown.rb
  [Linter] Promote long summary warning to an error.

Conflicts:
	lib/cocoapods/command/push.rb

Forcing UTF-8 encoding on licenses generation. Fixes #530

Update CHANGELOG for #530

Forcing UTF-8 encoding on licenses generation in Ruby 1.9 only. Fixes #530

Forcing UTF-8 encoding on licenses generation. Fixes #530

* master:
  [Specs] Fix repo specs.

* master:
  [Repo] Use raising bang variant for git operations.

* master:
  [Repo] Use raising bang variant for git operations.
  [Source] Allow the specify the master repo dir from an environment variable.
  [Linter] Improved checks for the summary and the git tag.
  [Repo] Fix banner.
  [Source] list the name of the repos.
  [Changelog]
  [Config] Added update_notification attribute.
  Support extracting .tar.bz2 files

The variable is `CP_MASTER_REPO_DIR` and potentially paves the way for
supporting a deeper linting of CocoaPods/Specs. Every check would be
supported, including checking that the files patterns match, except
xcodebuild checks.

Support extracting .tar.bz2 files

Closes #448

* master:
  [Executable] Added environment variable to force STDOUT sync.
  [Command] Don't run setup if needed for `pod setup`.
  Specs for updating a cached repo if the specified branch is missing.
  Update a pod's cached git repo if the specified branch isn't found.

Conflicts:
	lib/cocoapods/downloader/git.rb

This lead to a double execution of setup if the automatic setup triggered.

Update git repo cache if branch isn't found

Chartboost (and likely other sites) distribute source code in bz2
format.  Support for recognizing and extracting these files will come in
handy.