invoke immediately if it's not given any subscribable arguments
combine two basically identical tests
fix the void-returning method test
fix the no subscribable arguments test
lolwut
-scanWithStart:combine: shouldn't actually start with the start value, just use it as the starting previous value
Merge pull request #115 from github/fix-scan

Fix -scanWithStart:combine:
Adding CONTRIBUTING file
Remove Contributing section from README
Merge pull request #116 from github/contributing

Added CONTRIBUTING file
extract the invocation methods into a category
Merge remote-tracking branch 'origin/master' into lift
No more need for -all_load, use -ObjC instead
Merge branch 'master' into lazy-sequences

Conflicts:
	ReactiveCocoaFramework/ReactiveCocoa/RACSubscribableProtocol.h
just get the type encodings from the invocation itself
Merge pull request #92 from github/lazy-sequences

<RACStream> monad, RACSequence
Merge pull request #117 from github/remove-all-load

No more need for -all_load, use -ObjC instead
Merge branch 'master' into lift

Conflicts:
	ReactiveCocoaFramework/ReactiveCocoa.xcodeproj/project.pbxproj
	ReactiveCocoaFramework/ReactiveCocoa/ReactiveCocoa.h
legit fixed the merge conflicts
renaming all the things to signals