WIP: Upgrade to Chrome35

__WIP__

Merge PRs:
* https://github.com/atom/node-runas/pull/10
* https://github.com/atom/node-pathwatcher/pull/30
* https://github.com/atom/node-keytar/pull/8
* https://github.com/atom/git-utils/pull/33
* https://github.com/atom/node-oniguruma/pull/13
I'm surprised you have your own copy of this file too. Can we make brightray extensible so you don't have to duplicate all this code?