Add path query for chromium

Fixes #46

Author: mattyclarkson

lib/local/platform/unix.js

@@ -2,7 +2,7 @@ var path = require('path');
 
 module.exports = {
   chrome: {
-    pathQuery: 'which google-chrome',
+    pathQuery: 'which chromium-browser chromium google-chrome google-chrome-stable | head -n1',
     process: 'chrome',
     opensTab: true,
     args: ['--no-first-run']