Update to reflect changes in cocoapods syntax

[mmorearty]

• In the sample Podfile, changed the deprecated 'dependency'   to the newer 'pod'
• To install, changed 'pod install App.xcodeproj' to 'pod install'

[floere]

Thanks, @mmorearty! :)

[floere]

… and it is live: http://cocoapods.org/