Merge pull request #1 from okfn/master

Merge pull request #11 from KrishnaPG/master
added failure reporting mechanism for jQuery.getJson()
corrected the Deferred defn. for gdocs.js
Merge pull request #11 from KrishnaPG/master

corrected the Deferred defn. for gdocs.js
Merge pull request #12 from KrishnaPG/master

failure indication added for gdocs backend