Documentation: cleanup README
Documentation: cleanup README

Additions:
- [badges] add a link to ReadTheDocs
- [readme] add links to the documentation on ReadTheDocs

Deletions:
- [github] disable the Wiki feature
- [readme] remove documentation

Signed-off-by: VirtualTam <a6dbde5a0cb95e2f1d54284f6b3ff482118c3dad@flibidi.net>

virtualtam/botibal