Updated fromRaw and toRaw to rawValue

Fixed for Xcode 6.1 Beta 2.
Replaced toRaw with rawValue (Xcode 6.1 Beta 2 update)
Merge branch 'patch-1' of github.com:aral/Alamofire into aral-patch-1

Conflicts:
	Source/Alamofire.swift
Merge branch 'patch-2' of github.com:aral/Alamofire into aral-patch-2
Merge branch 'aral-patch-2' into xcode-6.1
Compiles on Xcode 6.1 Beta 2.
Merge pull request #114 from rosskimes/xcode-6.1

Compiles on Xcode 6.1 Beta 2.
Merge branch 'xcode-6.1' of github.com:yakatak/Alamofire