DOC: closes gh6838. Breakout options.rst from basics.rst

closes #6838. 
closes #3104 
Breakout "options" section for docs, heavily using info already in ``basics.rst``. Expands examples, and turns ``describe_options`` into a table.
You removed the content in faq.rst, but is this all included in the new page?

And, maybe you could leave the question in the FAQ, but refer to the new docs page as the answer?