If you are new at elementary OS and you want to install the driver for DWA 131 wireless adapter just write this following commands in terminal.
sudo apt-get install git build-essential
git clone https://github.com/Mange/rtl8192eu-linux-driver.git
sudo make install
Even if you don't have git installed at your machine, automatically you will receive the suggestion for it in the terminal.Then simply restart your machine, and connect to wifi.