Added optional appsecret_proof configuration parameter.
Clean up full config after each testcase
Handle Graph argument appsecret_proof given an appsecret
Attempting to fix tests for Ruby 1.8.7
Attempting to fix tests for Ruby 1.8.7
Updated readme for appsecret configuration option
Changed mechanism for passing appsecret in from config to constructor.

- updated readme accordingly
- updated tests accordingly
- cleaned up some code per code review
Added Koala.reset_config method for testing
Merge branch 'appsecret_proof' of https://github.com/nchelluri/koala
Fix intermittent bug
Update specs to run cleanly without deprecation warnings under RSpec 3.0.x
Clean up for Ruby 1.9.3+
Fix MultipartRequest spec
Reflect proper release version for the appsecret_proof update
Update changelog
Merge branch 'feature/apply_transpec' of github.com:petergoldstein/koala into petergoldstein-feature/apply_transpec
Debugger only in development
Move development dependencies to Gemfile
Merge branch 'fix-specs' into integration

Conflicts:
	spec/cases/multipart_request_spec.rb
Update changelog with PR #349