add Dojo AMD map example page

map sets chart url once feature service loads (see below).

seems like bower components need to live under app/bower_components,
so I pointed .bowerrc there. Also there is a app/app/bower_components
checked in, not sure if that needs to be there.
added .git ignore for npm and bower components

![image](https://cloud.githubusercontent.com/assets/662944/4513697/ec608dc0-4b51-11e4-89ac-b3069de75e26.png)