Allow configuring the cache options per presenter
Merge pull request #121 from zendesk/dasch/new-cache-options

Allow configuring the cache options per presenter
Clarify the `:expires_in` precedence rule
Remove trailing whitespace
Remove last empty line of comment
Replace Example with Examples
Keep comment line length to 80
Merge pull request #122 from yous/patch-tomdoc

Fix TomDoc
Don't use BlueCloth in the examples

It's prone to XSS attacks, sooo...