2.0 Release Candidate 2

This release candidate adds support for the new Search APIs as a preview feature.

>> Octokit.search_code 'octokit in:file extension:gemspec'
WARNING: The preview version of the Search API is not yet suitable for production use.
See the blog post for details: http://git.io/_-FA3g

#<Sawyer::Resource:0x007faf749ec138 @_agent=<Sawyer::Agent https://api.github.com/>, 
...