Added refresh link for step 3
Switch to JSON from JSONP.
Suppress redundant "Step 3" error if there is a problem connecting in Step2.
Revert steps 2 and 3 to "incomplete" if the api value are changed again and error out.
 Minor layout tweaks.
Altered "remember to save..." message.
Merge pull request #4 from ssundheim/master

 JSON version of plugin