simpleconvo is working

simpleconvo is included in Gemfile and included in features/support/env.rb spec/spec_helper.rb files.  (96.36%) covered. so far

Conflicts:

	Gemfile
Implemented sad path feature

Definition not yet
Added sad path for edit facebook url feature.
fix ambiguous 'I should see (\d+) events' step

also checked in db/schema.rb which get loaded when tests are run
add coverage/ to .gitignore to ignore simplecov output