You can find the adb tool in /platform-tools/
cd Library/Android/sdk/platform-tools/
You can check your devices using:
./adb devices
My result:
List of devices attached
XXXXXXXXX device
Set a TCP port:
./adb shell setprop service.adb.tcp.port 4444
./adb tcpip 4444
Result message:
restarting in TCP mode port: 4444
To init a wifi connection you have to check your device IP and execute:
./adb connect 192.168.0.155:4444
Good luck!