README

Added install instructions.

README.MD

@@ -8,3 +8,17 @@ on the SE lecture page.
 By default, all videos are prebuffered and even played at once. The first causes
 long waiting time before the site is usable and breaks slow bandwidth connections.
 The second causes high disturbance to the user.
+
+## Installation
+
+### Tampermonkey
+
+This script is usable with Tampermonkey plugin ([for Firefox](https://addons.mozilla.org/de/firefox/addon/tampermonkey/),
+[for Chrome](https://chrome.google.com/webstore/detail/tampermonkey/dhdgffkkebhmkfjojejmpbldmpobfkfo)).
+
+1. Install Tampermonkey plugin.
+2. Click the Tampermonkey icon on the top right corner.
+3. Go to `Dashboard -> Utilities tab -> Install from URL`.
+4. Copy and paste this URL there, and click install: `https://collaborating.tuhh.de/cev7691/selectureoptimizer/raw/master/SELectureOptimizer.js`.
+5. Confirm installation by clicking `Install`.
+6. Reload SE Lecture website.