Add more test coverage for Command
Merge branch 'newcommandspec' of https://github.com/carsonmcdonald/CocoaPods into carsonmcdonald-newcommandspec

Conflicts:
	spec/spec_helper/user_interface.rb
[bundle] Update to Xcodeproj version that fixes intermittent CI failures.

See https://github.com/CocoaPods/Xcodeproj/commit/0704b7772370feb8be154ace0ce48e09f215aeaf.
Clarify author documentation and template
Be more polite (thanks @mtitolo).
Merge pull request #1738 from CocoaPods/author-doc

Clarify author documentation and template
Add tests for the spec edit command
Merge pull request #1741 from carsonmcdonald/edittests

Add tests for the spec edit command
Add failure cases
Improve the lockfile version warning message

Correct a typo and improve the warning message that's shown when the
lock file was created with a newer version of CocoaPods.
Updated guidelines on submitting feature requests.
Merge pull request #1758 from wilkinsona/improve-version-warning

Improve the lockfile version warning message
Merge pull request #1759 from paulyoung/update-contributing-guidelines

Updated guidelines on submitting feature requests
Merge pull request #1756 from carsonmcdonald/moreliblintspecs

Add test for lint failures