Introduces snapshot feature (Android)
Handles "no filename passed in screenCapture"
Moves jQuery (Mobile) JS/CSS to bundle
adds hint for future use to share snapshot in native code
Adds mini readme.md
adds description of sample apps
Adds initial iOS sample app;

Signed-off-by: Andreas Schacherbauer <andreas.schacherbauer@wikitude.com>
changes sample folder location;

Signed-off-by: Andreas Schacherbauer <andreas.schacherbauer@wikitude.com>
Updates WikitudePlugin to include screenshot functionality and updates all related files to enable screen capturing;

Signed-off-by: Andreas Schacherbauer <andreas.schacherbauer@wikitude.com>