Add README.org, documentation and logging changes

yt-share-cleaner.js

@@ -15,16 +15,16 @@
             return(cleanedUrl)
         }
         // return original url if it is not a share link
-        console.log("Not a share link, clipboard contents unmodified.")
         return(url)
     }
 
     function sleep(ms) {
+        // sleep for half a second
         return new Promise(resolve => setTimeout(resolve, ms));
     }
 
     async function onMouseUp() {
-        // wait half a second after clicking before reading clipboard
+        // delay clipboard read slightly because of page script nonsense
         await sleep(500);
         
         let clipText = await navigator.clipboard.readText();
@@ -33,12 +33,13 @@
         if (clipText !== newText) {
             const newClip = await navigator.clipboard.writeText(newText);
             console.log("Modified clipboard with cleaned share link: %o", newText);
-            clipText = undefined;
-            newText = undefined;
+        } else {
+            console.log("Share link not detected, clipboard contents unmodified.");
         }
+        // discard clipboard data
         clipText = undefined;
         newText = undefined;
     }
-
+    // run whenever MOUSE1 is released
     document.addEventListener('mouseup', onMouseUp, false);
 })();