Updated installation instructions

README.md

@@ -3,7 +3,15 @@
 Feeling pressured by the Black Hole and the counter that comes with it? With this extension, you are able to hide the demotivating countdown and sad emote, replacing it by just a date and a motivating message for extra motivation.
 
 ## Installation from stores
-[Chrome](https://chrome.google.com/webstore/detail/better-black-hole-42-intr/oimhggembfdoaimpkppcpdjnfejiakbf) - [Firefox](https://addons.mozilla.org/en-US/firefox/addon/better-black-hole/)
+Chrome: [Download](https://chrome.google.com/webstore/detail/better-black-hole-42-intr/oimhggembfdoaimpkppcpdjnfejiakbf)
+
+## Installation through releases
+For local installation using signed versions of the extension, please navigate to the [releases of this repository](https://github.com/jkctech/BetterBlackHole/releases).
+
+## Installation from source
+Instructions on how to install this extension locally using the actual sourcefiles can be found at these pages:
+
+[Chrome](https://technoresult.com/how-to-install-chrome-extension-package-manually/#:~:text=chrome%3A%2F%2Fextensions%2F,and%20click%20on%20Add%20extension.) - [Firefox](https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/Your_first_WebExtension#:~:text=Installing,stay%20until%20you%20restart%20Firefox.)
 
 ## What does it look like?
 As we all know, the current way of displaying your Black Hole date is with a colored emote. This can be perticularly demotivating when you see it moving from green... to orange... to red...