Revert "Revert "Revert "Replace master branch with page content via GitHub"""

This reverts commit d01920089fe05c5fedb9310f2d28a16b375d769a.
Revert "Revert "Revert "Revert "Replace master branch with page content via GitHub""""

This reverts commit 95174bb69cd4452a9c1badee411bac1d5678f391.