Use proxy settings in deploy notification

Also extract multiple calls to Bugsnag.configuration to a local.
Merge pull request #83 from ggilder/ggilder/use-proxy-in-deploy-notification

Use proxy settings in deploy notification
Update changelog
Update version
Update README.md

Removed <p> wrapping from deploy tracking list
Conditionally load Rails 3 request middleware
Syntax declaration in cap file
Fix rake issue
Fix warnings due to string exception
Add vendor to gitignore
Convert to rspec >= 2.14 expectation syntax
Use better narrative for specs
Silence logger in tests
Initial attempt of not using Rails.root to infer path
Allow groupingHash setting

Let the user override  Bugsnag's grouping algorithm by specifying a
grouping hash as a parameter.
Attempt for travis in 1.8 ruby
Merge branch 'travis-1.8-rake' into small-fixes

* travis-1.8-rake:
  Attempt for travis in 1.8 ruby
Merge branch 'travis-1.8-rake' into conditional-rails-loading

* travis-1.8-rake:
  Attempt for travis in 1.8 ruby
Merge pull request #93 from blackxored/travis-1.8-rake

Fix travis builds in ruby 1.8
Merge branch 'grouping-hash' of github.com:astranchet/bugsnag-ruby