Update README.md

Author: MrFlyingToasterman

README.md

@@ -1,2 +1,15 @@
 # wayland-root-exec
 A simple bash script to run a grafical programm as root in wayland.
+# How to use
+    wayland-root-exec "command --example"
+# Install
+    $ sudo cp wayland-root-exec /bin/wayland-root-exec
+    $ sudo chmod +x /bin/wayland-root-exec
+# License
+![GNU GPLv3 Image](https://www.gnu.org/graphics/gplv3-127x51.png)
+
+This program is Free Software: You can use, study share and improve it at your
+will. Specifically you can redistribute and/or modify it under the terms of the
+[GNU General Public License](https://www.gnu.org/licenses/gpl.html) as
+published by the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.