update install instructions

README.md

@@ -1,9 +1,11 @@
 # SteamOS-RW
 Use pacman without breaking SteamOS
-<!--download button goes here-->
 ## Usage
 1. Make sure your sudo password is set (use the `passwd` command in Konsole if not)
-2. Download the `.desktop` file above and open it in your file manager to start the install
+2. open a terminal and copy/paste the following command:
+```bash
+curl -L https://gitea.sugoidogo.com/sugoidogo/steamos-rw/raw/branch/master/curlme.sh | bash
+```
 
 Once installed, you can use the `steamos-rw` command to enable, disable, or reset your writeable overlay.
 ## Details