Adds documentation for Prelude Python.
Adds search for symbol key-binding to docs.
Move docs, provide link in README.
Fix typo, improve styling.
Don't need to require the `smartparens-ruby` explicitly.

As of the smartparens-config will require automatically. Here is the [code](https://github.com/Fuco1/smartparens/blob/master/smartparens-config.el#L74).
Disable guru mode