bower.json: Set moduleType to globals

Per bower/spec@632ff90#commitcomment-10914138
[ci skip]

Author: cvrebert

bower.json

@@ -9,6 +9,7 @@
     "Gleb Mazovetskiy"
   ],
   "description": "bootstrap-sass is a Sass-powered version of Bootstrap, ready to drop right into your Sass powered applications.",
+  "moduleType": "globals",
   "main": [
     "assets/stylesheets/_bootstrap.scss",
     "assets/fonts/bootstrap/glyphicons-halflings-regular.eot",