Up bower version to try and fix travis builds.

Author: isi-mbostwick

package.json

@@ -18,7 +18,7 @@
   ],
   "license": "MIT",
   "devDependencies": {
-    "bower": "~1.2.8",
+    "bower": "~1.3.8",
     "grunt-bump": "0.0.15",
     "grunt-contrib-clean": "~0.5.0",
     "grunt-contrib-coffee": "~0.7.0",