Breaking changes: change --domain flag behaviour + remove visit metric

--domain flag now receives the full domain path which will be added to things like rss.

so instead of `--domain "example.com"` write `--domain "https://example.com"`.

update version to v0.7.1

Update README.md

I thought adding running instructions would be useful. :)

adding rss feed

bump version to 0.5.1

a better arguments parser

version bump to 0.4.1

Changing path, adding a Transformer for ScottyT to pass a config, API…

… changes, 0.4.0

refactoring and tls support

separating executable and library, adding pages, settings and two themes