Coonect Due to Wifi module

I want to connect Due to a WiFi module and talk to it. I am following this tutorial. I am using Arduino 1.6.0. While compiling webTimeA1 I got an warning and error:

Arduino: 1.6.0 (Windows 7), Board: “Arduino Due (Programming Port)”

WARNING: library SoftwareSerial claims to run on [avr] architecture(s) and may be incompatible with your current board which runs on [sam] architecture(s).
WebTimeA1.ino:30:28: fatal error: SoftwareSerial.h: No such file or directory

I tried downloading NewSoftwareSerial library and pointing to that version instead, and also I tried to points to SoftwareSerial.h file in the avr folder, but still I got compilation errors.

Any ideas?