Add github support to readme

Author: JohannesDeml

README.md

@@ -25,7 +25,7 @@ This repo is experimental and was created out of the need to have a better exper
 
 ### Supported Pages
 
-- [ ] github
+- [x] github (reads special `data-code-text` attributes)
 - [x] gitlab
 - [x] bitbucket server
 

chrome/content/scripts/content.js

@@ -151,9 +151,12 @@ function runGuidReplacer() {
     elements[i].parentNode.removeChild(elements[i]);
   }
 
-  // Traverse all text nodes in the document body
+  // Traverse all potential nodes in the document body
   traverseTextNodes(document.body);
-  traverseDataCodeTextElements(document.body);
+  if (window.location.hostname === "github.com") {
+    // Additionally traverse all special github elements with data-code-text attribute
+    traverseDataCodeTextElements(document.body);
+  }
 
   console.log("Found " + matchCount + " matches" + " in " + nodeCount + " nodes (duration: " + (performance.now() - startTime) + " ms)");
 }