1.	Connect the device via USB and make sure debugging is working;
2.	'adb tcpip 5555'. This makes the device to start listening for connections	on port 5555;
3.	Look up the device IP address with 'adb shell netcfg' or	'adb shell ifconfig' with 6.0 and higher;
4.	You can disconnect the USB now;
5.	'adb connect <DEVICE_IP_ADDRESS>:5555' This connects to the server we set	up on the device on step 2;
6.	Now you have a device over the network with which you can debug as usual.
To switch the server back to the USB mode, 'run adb usb', which will put
the server on your phone back to the USB mode. If you have more than one device, you can specify the device with the -s option: adb -s <DEVICE_IP_ADDRESS>:5555 usb.
To find the IP address of the device: 'run adb shell' and then 'netcfg'.
You'll see it there. To find the IP address while using OSX run the
command 'adb shell ip route'.