Add support for document sharing

[gandreoliva]

Inkpad is excellent!

Please consider adding support for "Open in..." In order to export SVG/PDF to other apps. Email and Dropbox are not enough, because they depend on a working internet connection, and SVGs can get pretty heavy.

[RussellWarshay]

This would be a nice addition.

[samgreen]

This can be accomplished with the UIDocumentInteractionController on iOS.

[sprang]

It's a good idea and I'd be happy to take a patch for this... I probably won't get to it for a while if it's left to me.

[sprang]

This is now implemented in the canvas view (it will be in the next update). Could conceivably add it in the gallery too, but I think this is sufficient.