Update readme.md
Update readme.md

Updated readme.md file with "What's not working and probably never will." section.
ShyykoSerhiy/skyweb,demurgos/skype-http,demurgos/skype-http,ocilo/skype-http,demurgos/skype-http,ocilo/skype-http,d10n/skyweb,ocilo/skype-http,ocilo/skype-http,demurgos/skype-http