[#121] Added support for sharing multiple images (or other files) on iOS and Android
fixed typo
[#105] Documented a hidden feature (use subject as filename when sharing a base64 encoded file on Android)
[#112] don't create a dir when no image has been passed
Merge remote-tracking branch 'origin/master'
[#121] Special case for shareViaTwitter documented
[#73] Share via Email - fixed an issue on some Android devices