Added BLE terminal

[Mars-Ares]

Use sudo ./gattctl.py --connect address to open an terminal.
'ESC' + your text + ENTER to send a message

[mdxs]

There are some .pyc files in the commit that probably shouldn't?

[Slievenamon]

I agree but I don't know how to remove it from the commit, I'm not used to github

[rngtng]

@Slievenamon unintentionally committed files are not related to github, but to your local commit. Run sth like git rm gatt/*.pyc followed by git commit and push to remove them