Update README.md

Author: spacehuhn

README.md

@@ -113,7 +113,7 @@ If no port shows up you may have to reinstall the drivers.
 
 First start your ESP8266 by giving it power.  
 
-You can use your smartphone if you have an OTG USB cable.
+You can use your smartphone if you have a USB OTG cable.
 ![esp8266 deauther with a smartphone](https://raw.githubusercontent.com/spacehuhn/esp8266_deauther/master/screenshots/smartphone_esp_2.jpg)
 
 Scan for WiFi networks and connect to `pwned`. The password is `deauther`.