example-rails-google-map is a very basic rails app showing one way of implementing geocoding and Google maps. Use this app as an example or base for adding locations to a map.
Visitors have the ability to put in an address, that address is then geocoded and shown on a Google map. They then have the ability to remove those locations. App also consists of a test suite with both unit and feature tests.
To setup the app run:
bin/setup
Now run the test suite to make sure everything is passing:
rake