doc tweaks

Author: jrburke

index.html

@@ -4,11 +4,13 @@
     <p>RequireJS is a JavaScript file and module loader. It is optimized for
     in-browser use, but it can be used in other JavaScript environments,
     like Rhino and <a href="requirejs/tree/master/docs/node.md">Node</a>. Using
-    RequireJS will improve the speed and quality of your code.</p>
+    a modular script loader like RequireJS will improve the speed and
+    quality of your code.</p>
 
     <p>
     IE 6+ .......... compatible &#x2714;<br>
-    Safari 3.2 ..... compatible &#x2714;<br>
+    Firefox 2+ ..... compatible &#x2714;<br>
+    Safari 3.2+ .... compatible &#x2714;<br>
     Chrome 3+ ...... compatible &#x2714;<br>
     Opera 10+ ...... compatible &#x2714;
     </p>