Add version.js to enyo.js's list of boot script files

Needed to make enyo.version struct available in non-minified apps

Enyo-DCO-1.1-Signed-Off-By: Ben Combee (ben.combee@lge.com)
Merge pull request #402 from enyojs/ENYO-2711-fix-debug

Add version.js to enyo.js's list of boot script files