Revert "Replace master branch with page content via GitHub"

This reverts commit 72123335c19435cf2a04f7fecc47c54735fa90c6.
Revert "Revert "Replace master branch with page content via GitHub""

This reverts commit ae8824d659a8b85d637f4f69776a3ebb14f26a8e.
Revert "Replace master branch with page content via GitHub"

This reverts commit 72123335c19435cf2a04f7fecc47c54735fa90c6.
Revert "Revert "Replace master branch with page content via GitHub""

This reverts commit 95fd974044900dc6e2c756f67a315e0fe2843332.