Some versions of iOS fail to load cordova files

I found that some versions of iOS WebView add a trailing slash to the url thus failing to load the correct files, because `http://myApp.com?platform=android&cordova=3.0.0` fails this check `cordovaRuntime.addFile('android', '3.0.0', 'cordova-3.0.0-android.js')` as the returned string is not `'3.0.0'` but `'3.0.0/'`. This is only happening on some iOS devices and emulators, more info on this in the [issue 4](https://github.com/SpaceCapsule/Meteor-LazyLoad/issues/4) of [LazyLoad](https://github.com/SpaceCapsule/Meteor-LazyLoad) package. I think we can always remove the trailing slash from `version` to avoid any inconsistencies between devices.