Rewrite the README to describe FRP and RAC in detail
Remove problematic parens from a URL
Fix a few typos and clarify a point
Update login example to reflect the removal of RACMaybe
Make some clarifications based on feedback from @jspahrsummers
Merge pull request #294 from andrask/master

-zip:reduce completion depends on order of zipped signals
Update direct file URLs to refer to the ReactiveCocoa org
Remove demos, which will now be in their own repos

https://github.com/ReactiveCocoa/GHAPIDemo
https://github.com/ReactiveCocoa/RACiOSDemo
Disallow multiple signals being bound to the same property
Optimize signal binding tracking
Change -bindTo: to not send unnecessary starting value.
Merge pull request #299 from ReactiveCocoa/one-signal-per-property

Disallow binding multiple signals to the same property
Update README links
Merge pull request #300 from ReactiveCocoa/fix-bindto

Change -bindTo: to not send unnecessary starting value.
Merge pull request #298 from ReactiveCocoa/move-demos

Remove demos, which will now be in their own repos
Merge the "Examples" section into the other code samples and add detail
Add Getting Started instructions to the README

Completes #13.
Stub Design Guidelines and Framework Overview
"Streams" section
"Signals" section