test to verify #19
remove scope to allow access to value within controller scope

This addresses #19 where when the ngChange event fired, the value was still the old value.
fix(resettable): switch from broadcast to trigger

Fix issue where resettables across the page were cleared when user clicked the clear buttion. Closes #26
fix(form): added test and fixed issue with #22
Merge pull request #27 from facultymatt/fix-resettables

Fix resettables