Include a message indicating how many pull requests were found.
Conditionally filter pull requests, too, if github.filter_pull_requests is true.
Adding documentation of the 'github.filter_pull_requests' option.
Cleaning up log messages to be slightly more consistent.
Removing unnecessary whitespace.
Properly link to the 'Common Configuration Options' reference.
Merge pull request #137 from coddingtonbear/github_filterable_pull_requests

Allows user to optionally enable assignee filters for github pull requests