In this video, the author will show you how to upload the code over the air in your ESP8266 12E board. Now no need to connect the cable again and again. Just upload it via WiFi without any physical connection.
Arduino 1.6.7 (windows): click here
Arduino 1.6.7(Mac): click here
Python 2.7 (Windows): click here
Code: click here
Watch this video in Hindi: click here