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 'master' into xcode-6.1

Conflicts:
	Source/Alamofire.swift
	Tests/ParameterEncodingTests.swift
update to support Xcode 6.1b3
Merge pull request #139 from orta/xcode-6.1

@mattt => update to support Xcode 6.1b3
Xcode 6.1 GM fixes
Merge pull request #143 from nduplessis/xcode-6.1

Xcode 6.1 GM fixes
Merge branch 'master' into xcode-6.1

Conflicts:
	Source/Alamofire.swift
Merge branch 'xcode-6.1' of github.com:Alamofire/Alamofire into xcode-6.1

Conflicts:
	Example/DetailViewController.swift
	Example/MasterViewController.swift
	Source/Alamofire.swift
	Tests/ParameterEncodingTests.swift
[Issue #164] Fixed mistake in merge
Fix for failable NSURLComponents initializer

Using if let to prevent compiler error in XCode 6.1GM2.
Unwrap optional NSURL initializer

Because URL is hardcoded and will always succeed, if changed to invalid URL the test will crash and the error will also be quite clear.
Fix NSURL failable initializer must be unwrapped
Merge pull request #174 from Q42/xcode-6.1GM2

XCode 6.1 GM2 fixes
Removed an unused 'priority' parameter