Setting up Rassberry Pi Zero W 1/2 with USB (not using hdmi) On MAC

1. 
2. Copy  Rassberry Pi zero image (pi 3 image also supported on pi zero) on a SD card
1. https://www.raspberrypi.com/software/ 
2.  
3.  From mac - Finder - open SD card . It opens the root folder
4. We will edit or create 4 files: 
1. config.txt
2. cmdline.txt
3. ssh
4. wifi 
5.  config.txt
1. At the bottom of the file add this line
1. dtoverlay=dwc2
6. cmdline.txt
1. add this line between rootwait  ........  quiet . Should look  like this,
1. rootwait modules-load=dwc2,g_ether quiet  
7. ssh
1. create an emptyfile named ssh (no extensions) 
8.  wifi : (pi zero can connect only to 2.5gh Unless you update your firmware)
1. create this file in root : wpa_supplicant.conf  
2. add this lines to the file - with your own wifi credentials
1. country=US
   ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev
   update_config=1
   
   network={
   ssid="*******"
   psk="********"
   } 
9. Insert sd card in raspberry pi  zero w , and connect from pc with,
1.   ssh pi@raspberrypi.local or find the ip from router and try ssh pi@192.168.1.100