Merge pull request #1 from dzog/develop

Basic Tweener class + implementations for toggles
Added tweener to xcode project
Added tweeners to speed variables; they don't behave properly
Added tweeners to speed variables; they don't behave properly
Merge branch 'develop' of https://github.com/scottnla/cortex into develop
Added ofxSyphon support; tested in OSX 10.8 with Resolume and Radome.