Clean up some incorrect data, add a FAQ regarding the read-only API
Added a long-term transient that will act as a fallback if a) there isn't a current short-term transient for the request and b) the API is down (as has happened several times during development of this plugin)
Stop printing the petition object to the screen but leave it in for developers
Change the default shortcode name from [petition] to [wtp-petition] but add a filter, wethepeople_shortcode_name, that allows users *cough*developers*cough* to change it back (or to anything else) if desired. Fixes #4