Mention extra steps to connect devices on Linux

[codeanticode]

Devices may appear like this when running abd devices:

00d74be43fac3250 no permissions (verify udev rules); see [http://developer.android.com/tools/device.html]

The instructions to solve this are here

https://developer.android.com/studio/run/device.html

Should mention that when running on a device from Linux for the first time, and also to make sure that the USB Configuration is not set to charging.

[codeanticode]

Implemented with c4afd99