Added installation options to README.md

Author: ulville

README.md

@@ -10,6 +10,13 @@ This GNOME Extension lets users to quickly view and select the preset they want
 
 ## Installation
 
+### From GNOME Extensions Website
+
+- Go to [GNOME Extensions Website](https://extensions.gnome.org) and search for EasyEffects Preset Selector
+- You need to have GNOME Shell Integration add-on installed for your browser to be able to install extensions from [GNOME Extensions Website](https://extensions.gnome.org)
+
+### Manual Installation
+
 - Clone the repository:
 ```
 git clone https://github.com/ulville/eepresetselector.git
@@ -21,6 +28,20 @@ cp -r eepresetselector/[email protected] ~/.local/share/gnome-s
 - Log out and login.
 - Enable the extension from GNOME Extensions app.
 
+### Install Script
+
+- Clone the repository as stated above.
+- Run install script:
+```
+cd eepresetselector
+```
+```
+chmod +x install.sh
+```
+```
+./install.sh
+```
+
 ### Dependencies
 
 This Extension depends on EasyEffects to function. It makes use of command-line options `easyeffects -p` and `easyeffects -l`.