Fixes a typo in the callJavaScript function, defined in WikitudePlugin.js.

Also updates the release date.

Signed-off-by: Andreas Schacherbauer <andreas.schacherbauer@wikitude.com>
Merge pull request #21 from AndreasSchacherbauerWikitude/master

Fixes a typo in the callJavaScript function, defined in WikitudePlugin.j...