update the remote verify process

update the remote verify process according to

 https://developer.mozilla.org/en-US/docs/Persona/Remote_Verification_API?redirectlocale=en-US&redirectslug=BrowserID%2FRemote_Verification_API

because with the previous host and port was failing with "invalid assertion variables"
Merge pull request #2 from jfromaniello/master

update the remote verify process