Added an idiot-proof warning that the drivers for the SDR you want to…

… use must be installed. I know... shocker...

readme.md

@@ -41,14 +41,13 @@ To create a desktop shortcut, rightclick the exe and select `Send to -> Desktop
 
 Download the latest release from [the Releases page](https://github.com/AlexandreRouma/SDRPlusPlus/releases) and extract to the directory of your choice.
 
-Then, run:
+Then, use apt to install it:
 
 ```sh
-sudo apt install libfftw3-dev libglfw3-dev libvolk2-dev libzstd-dev libairspyhf-dev libiio-dev libad9361-dev librtaudio-dev libhackrf-dev
-sudo dpkg -i sdrpp_debian_amd64.deb
+sudo apt install path/to/the/sdrpp_debian_amd64.deb
 ```
 
-If `libvolk2-dev` is not available, use `libvolk1-dev`.
+IMPORTANT: You must install the drivers for your SDR. Follow instructions from your manufacturer as to how to do this on your particular distro.
 
 ### Arch-based