Fixes usage of pods in static libraries with Xcode 6.

Fixes #2666.
Merge pull request #2676 from CocoaPods/issue/2666

Fixes an issue when using pods in static library targets
Update spec integration fixtures
[Resources] Fix when Xcode is installed with space in path

Fixes #2684
Update spec integration fixtures
[travis] Simplify configuration and use bundler cache
[Spec] Fix stubbing removed method resulting in test taking 10s
[Spec] Correctly stub the sources used for search

Before, we was stubbing something which wasn't called and thus searching
the whole master repository. This change shaves 20 seconds off the
testing time.
[Resources] Fix issue installing to target without resources

Fixes #2083
[Rakefile] Limit rubocop to just CocoaPods
Merge branch 'kyle-travis'
Ensure that git 1.7.5 or newer is installed

Fixes #2651
Revert "[Command] Remove deprecated pod push"

This reverts commit 554e19519164570915ebf9d07d4ccfba1b25712a.

Conflicts:
	CHANGELOG.md
Release 0.34.4
[Command] Remove deprecated pod push

This reverts commit 52b465c92f7e56eeb68bf798676ad526aa60b88b.