doc: simplified pure consensus seeking
doc: simplified pure consensus seeking

This changes TC addition to a standard TC motion instead
of requiring unanimous consent of all members.

PR-URL: https://github.com/iojs/io.js/pull/677
Reviewed-By: Chris Dickinson <38a75c4c4f5646d63b752460df745c5b937b7e58@gmail.com>

dreamllq/node,dreamllq/node,dreamllq/node,dreamllq/node,dreamllq/node,dreamllq/node,dreamllq/node,dreamllq/node,dreamllq/node