Added script, install instructions

README.md

@@ -1,2 +1,5 @@
 # ytch
 Youtube comment hider
+
+###Installation
+Drag ytch.user.js into Firefox (with Greasemonkey installed) or chrome (with Tampermonkey installed)

ytch.user.js

@@ -0,0 +1,40 @@
+// ==UserScript==
+// @name Youtube comment hider
+// @namespace https://austenwares.com/gogs/stonewareslord/ytch
+// @description Hides youtube comments that contain specified text
+// @author stonewareslord
+// @version 0.1
+// @homepage https://austenwares.com/gogs/stonewareslord/ytch
+// @include http://youtube.com/watch*
+// @include https://youtube.com/watch*
+// @run-at document-start
+// ==/UserScript==
+
+// Options
+// Set this to 'hide' to hide comments that contain words
+// Set this to 'dim' to dim comments that contain words
+var hideCommentOrDimComment = 'hide';
+// Set this to an array of words or phrases to check for
+// All entries should be wrapped in '' or ""
+// All entries except the last one should end in a comma after ' or "
+var wordList = [
+  'Example first string',
+  'Example second string',
+  "Example third string (with quotes)",
+  'Example last string (no comma after tick)'
+];
+function clearComments(words){
+  comments = document.querySelectorAll('.comment-item>.content>.comment-text>.comment-text-content');
+  for (var i = 0; i < comments.length; i++) {
+    for (var j = 0; j < wordList.length; j++) {
+      if (comments[i].textContent.includes(wordList[j])) {
+        commentToRemove=comments[i].parentNode.parentNode.parentNode;//.parentNode;
+        // Set the opacity to 40%
+        commentToRemove.style.opacity=.4;
+        // Remove the comment chain entirely
+        //commentToRemove.parentNode.removeChild(commentToRemove);
+      }
+    }
+  }
+}
+setInterval(clearComments(wordList), 1000);