Bump version number
Add a method to combine two Cartfiles
Load and consider Cartfile.private, if it exists
Move Quick, Nimble, xcconfigs to Cartfile.private
Explain Cartfile.private in the Artifacts document
Explain why the Run Script phase is necessary

Without a link to the radar, it might not be clear that we're working around an Xcode issue. I want to be clear that it's not a restriction inherent to Carthage itself.
Merge pull request #250 from Carthage/jspahrsummers-patch-1

Explain why the Run Script phase is necessary
Merge pull request #247 from Carthage/private-cartfile

Cartfile.private
Merge remote-tracking branch 'origin/master' into 0.5-development
Merge pull request #240 from Carthage/0.5-development

0.5: Pit of Loneliness
Merge branch 'master' into carthage-fetch

Conflicts:
	Source/CarthageKit/Project.swift