The first thing you should note is that Build is not yet defaulting to 3.0 when you create a new project. If you want to use 3.0, please be sure to specify it in the config.xml file:
<preference name="phonegap-version" value="3.0.0" />
Next - if you remember my blog post on PhoneGap 3 (PhoneGap 3.0 Released - Things You Should Know), then you remember that the biggest change was to core features. In order to use any of the core features you must include the plugin for it.
PhoneGap Build also has this rule!
In order to include a core plugin with your PhoneGap Build project, simply add the gap:plugin tag to your config.xml file. Here is an example:
<gap:plugin name="org.apache.cordova.core.camera" /> <gap:plugin name="org.apache.cordova.core.geolocation" /> <gap:plugin name="org.apache.cordova.core.dialogs" />
PhoneGap Build now has a "Plugins" tab for each project. This is a great way to confirm that you set up the config.xml correctly:
If you forget the value for a particular plugin, or want to see what PhoneGap Build supports from third parties, just hit the Plugins tab at the very top of the page. The list of supported third-party plugins seems to be much improved!