Fix gemspec
initial work on call feedback
add call feedback summary
comments and GET /Summary support
fix summary path
Remove Calls FeedbackSummary.
add support for /Feedback
Implements call feedback summary
Updates Readme for 3.12
Delegate account methods on the client to the default account
Updates documentation regarding shortcut to account resources
Delegate methods from client to account with method_missing
whitespace
Merge branch 'call-feedback'

Conflicts:
	twilio-ruby.gemspec
bump version to 3.12.1
typo
fix tests
Some style updates.

* Changes symbol hash syntax to Ruby 1.9 style.
* Adds spaces around  block syntax
* Reduces all lines to less than 80 characters
* Removes 1.8.x Ruby varieties from travis.yml
Merge latest from master
Merge pull request #102 from philnash/client-account

Shortcut to default account resources through client delegate methods