Add support for auto-upload audio/video and send it.
Fix auto-upload audio/video and send it.
Add support for send vCars.
Add examples of use.
Add new check in WaitforReceipt function.
Fix show function in vCard class.
Update CHANGELOG.md (partial)
Update CHANGELOG.md
Merge pull request #272 from facine/master

Add support for auto-upload audio/video and send it, support for send vCars and more!