Revert "Replace master branch with page content via GitHub"

This reverts commit 1e27d08cd97633937ac8676636e672c73c5651bd.
Revert "Revert "Replace master branch with page content via GitHub""

This reverts commit 295dbbd359431898bbf5f653d67f80582a9c13e6.
Revert "Replace master branch with page content via GitHub"

This reverts commit 1e27d08cd97633937ac8676636e672c73c5651bd.