docs: reword project messaging

rewords project messaging in README to make the overall
project messaging a bit clearer. More discussion to be
found in nodejs#24

Author: kevinohara80

README.md

@@ -3,10 +3,9 @@ io.js
 [![Gitter](https://badges.gitter.im/Join Chat.svg)](https://gitter.im/iojs/io.js?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
 
 This repository began as a GitHub fork of
-[joyent/node](https://github.com/joyent/node) where contributions,
-releases, and contributorship are under an
+[joyent/node](https://github.com/joyent/node).
+io.js contributions, releases, and contributorship are under an
 [open governance model](./CONTRIBUTING.md#governance).
-
 We intend to land, with increasing regularity, releases which are
 compatible with the npm ecosystem that has been built to date for node.js.