Made InteractiveTelegramClient cool

Scheme layer used: 55

Yes, really cool! I promise. Even though this is meant to be a library, that doesn't mean it can't have a good interactive client for you to try the library out. This is why now you can do many, many things with the InteractiveTelegramClient:

• List dialogs (chats) and pick any you wish.
• Send any message you like, text, photos or even documents.
• List the latest messages in the chat.
• Download any message's media (photos, documents or even contacts!).
• Receive message updates as you talk (i.e., someone sent you a message).

It actually is an usable-enough client for your day by day. You could even add libnotify and pop, you're done! A great cli-client with desktop notifications.

Also, being able to download and upload media implies that you can do the same with the library itself. Did I need to mention that? Oh, and now, with even less bugs! I hope.