-Slight simplification in drawing code

- Converstion to ARC, update rate changes, stylistic cleanup

-Fix up for Xcode5 / iOS7

- Added additional methods for setting plot history from C-style arrays of integers, floats, and doubles

-Updated with notes about the baseline feature

-Added new screen capture showing baseline functionality

-Updated label on demo

-Added support for optional reference ("base") line

-Added BSD license verbage

-Remove extraneous copy of readme

-Added README

Initial commit