added hook for providing a proxy to HttpClientAdapter
integration test for get branches
Merge pull request #309 from lbargaoanu/branches-integration-test

Integration test for get branches.
Merge pull request #306 from octokit/better-proxy-support

Improving Proxy Server support
Refactor SearchIssuesRequest to match the API
Fix spelling mistake
Add sort order to parameters
Add unit tests
Remove skip from unit tests
Keeping line lengths to about 80
Fix how params are added to querystring
Change tests to use hard coded query strings
Hard code result string in some more tests
Fix incorrect URL
Add links to search doco for issues request props
Add ToParamater extension method on Enums

To extract the Value field from the Parameter Attribute
Refactor to use BaseSearchRequest
Call ToParameter extension in base class

instead of hard coded strings
Add EnumExtension class to *.mono projects
Rearrange comments to include a description

Move URI to <remarks> field