Add bradfeehan/SublimePHPCoverage

A plugin for Sublime Text 2, which visualises PHP code coverage data in the editor.

## Screenshot

![Screenshot of Sublime PHP Coverage in action](https://a248.e.akamai.net/camo.github.com/94bdc5c2f971353be94a2ea49ee1f1d42bb1a3f2/687474703a2f2f692e696d6775722e636f6d2f344153636f2e706e67)