Add example to README on retrieving coordinates from mongodb model.
Fixes issue #75 (ActiveRecord) and more (Mongoid).
Prevent an exception when geocoding is initialized for a child STI model when the parent is also geocoded.
In certain conditions a lookup returned [nil] instead of , which caused a Result object to be initialized with no data.
Allows custom handling of geocoding service connection problems.
Was causing problems when installing with bundler from Git URL.