Use BUGSNAG_API_KEY by default
Merge pull request #43 from bugsnag/env-var

Use BUGSNAG_API_KEY by default
Add proxy support
Explicitly pass all arguments
Add hipchat notification to travis
Merge branch 'master' of github.com:bugsnag/bugsnag-ruby
Fix tests
Merge pull request #44 from bugsnag/proxy_support

Add proxy support
README changes
Version bump to 1.5.0
Clear up example code
Regenerate gemspec for version 1.5.0
Update changelog
Update eventmachine example in readme
Fixes #47
Merge pull request #48 from bugsnag/fix_rake_block_arguments

Fixes #47
Version bump to 1.5.1
Regenerate gemspec for version 1.5.1