Add man page for rebuilder
A man page must be added for example:
https://github.com/kpcyrd/rebuilderd/commit/7f6a1ce7a087452cf6b7088e03d0ade246394a44
A man page must be added for example:
https://github.com/kpcyrd/rebuilderd/commit/7f6a1ce7a087452cf6b7088e03d0ade246394a44