Merge branch 'hotfix/travis-ci' into develop
Merge branch 'hotfix/doxygen' into develop
Merge branch 'hotfix/appledoc' into develop
Monkey-patch Doxygen's Build Status using Nokogiri
Send AppleDoc docset files to CFSocketsDocs folder

Writing to CFSocketsPages replaces the folder contents and destroys the Doxygen
output. Use a different folder.
Link the DocSet fall-back URL to the GitHub home page
Merge branch 'develop'