Set `author` and `github_user` in `script/setup`
Use default `Rakefile`, `_config.yml`, `config.rb`

This reverts commit c6abf1dc566b1f8289d4db9d830655986a9982cc.
This reverts commit 8c638d3b29e88a35ed479e97118f3f3b94284d2d.
This reverts commit 8b2bf010f4696f31abfb6feb0911b72e7e741a4c.

Conflicts:
	.gitignore