Integration: update for Xcodeproj
Bundle: udpate cocoapods-core
Validator: check license only in root spec

Closes https://github.com/CocoaPods/Core/issues/132
Bundle: update Xcodeproj
Fixes an issue where XCTest is missing in Xcode 6

The XCTest.framework bundle has changed location in Xcode 6. This PR
fixes this [#2296](https://github.com/CocoaPods/CocoaPods/issues/2296)

Conflicts:
	CHANGELOG.md
Bundle: update cocoapods-core

Required and update to the fixture spec repos
Merge pull request #2332 from lordkev/fix-xctest-xcode6

Fixes an issue where XCTest is missing in Xcode 6