update contributors

README.md

@@ -298,11 +298,13 @@ Credits
       Author of Showdown
     * [John Gruber](http://daringfireball.net/projects/markdown/):<br/>
       Author of Markdown
-  * Maintenance
+  * Maintenance/Contributions
     * [Corey Innis](http://github.com/coreyti):<br/>
       GitHub project maintainer
-    * [Remy Sharp](http://remysharp.com/):<br/>
+    * [Remy Sharp](https://github.com/remy/):<br/>
       CommonJS-compatibility and more
+    * [Konstantin Käfer](https://github.com/kkaefer/):<br/>
+      CommonJS packaging
     * [Roger Braun](https://github.com/rogerbraun):<br/>
       Github-style code blocks
     * [Dominic Tarr](https://github.com/dominictarr):<br/>
@@ -310,5 +312,11 @@ Credits
     * [Cat Chen](https://github.com/CatChen):<br/>
       Export fix
     * [Titus Stone](https://github.com/tstone):<br/>
-      Mocha tests, **extension mechanism**, and bug fixes
+      **Mocha tests**, **extension mechanism**, and bug fixes
+    * [Rob Sutherland](https://github.com/roberocity):<br/>
+      The idea that lead to extensions
+    * [Pavel Lang](https://github.com/langpavel):<br/>
+      Code cleanup
+    * [Ben Combee](https://github.com/unwiredben):<br/>
+      Regex optimization
 

package.json

@@ -11,7 +11,10 @@
         "Roger Braun",
         "Dominic Tarr",
         "Cat Chen",
-        "Titus Stone"
+        "Titus Stone",
+        "Rob Sutherland",
+        "Pavel Lang",
+        "Ben Combee"
     ],
     "repository": {
         "type": "git",