Apply some changes to JSON-P responses to mitigate the Rosetta Flash attack.

For more info see http://miki.it/blog/2014/7/8/abusing-jsonp-with-rosetta-flash/
Bump version to 1.0.2.
Update download links for 1.0.2.
Bump version to 1.0.3 because I missed the version numbers in the source code in 1.0.2.
Merge tag '1.0.3' into gitter-dispatcher

Releasing version 1.0.3.