fix getEncryptedObj test

getEncryptedObj doesn't even exist any more. I remove the test for that
function, and add a test for the new function, export, which replaces it.
update references to bitcore
Merge pull request #1 from matiu/bug/update-bitcore

Bug/update bitcore
Merge pull request #646 from ryanxcharles/bug/fix-getEncryptedObj-test

fix getEncryptedObj test