Add emacs and more tools to /tools/; fix a typo

src/site/tools/index.html

Index: src/site/tools/index.html
diff --git a/src/site/tools/index.html b/src/site/tools/index.html
index ea417d88572d336baff30ac04a55a12b4473a331..55ab3a2830f652d75cfa12f61e26f407a83211f0 100644
--- a/src/site/tools/index.html
+++ b/src/site/tools/index.html
@@ -29,7 +29,7 @@ js:
 
 
 <p>
-  The Dart download has 
+  The Dart download 
   has everything you need
   to edit, run, and debug Dart apps.
 </p>
@@ -67,6 +67,11 @@ js:
         <td> <a href="/tools/eclipse-plugin/"><b>Eclipse</b></a> </td>
       </tr>
       <tr>
+        <td> <img src="images/emacs.png" width="48"
+                  alt="Emacs logo" > </td>
+        <td> <a href="https://github.com/nex3/dart-mode"><b>Emacs</b></a> </td>
+      </tr>
+      <tr>
         <td> <img src="images/IntellIJ-IDEA.png" width="48"
                   alt="IntelliJ logo" > </td>
         <td> <a href="http://plugins.intellij.net/plugin/?idea&amp;id=6351"><b>IntelliJ IDEA and WebStorm</b></a> </td>
@@ -144,7 +149,27 @@ js:
           So how do you debug the app
           once it's been compiled to JavaScript?
           Here are a few tips for specific browsers. </dd>
-    </ul>
+      <dt> More tools</dt>
+        <dd> This site relies on two non-SDK tools
+          to test and deploy Dart code:
+          <ul>
+            <li> <a href="https://drone.io">drone.io</a>
+              continuous integration </li>
+            <li> <a href="http://pub.dartlang.org/packages/hop">HOP</a>
+              task framework </li>
+          </ul>
+
+          You might want to try these, as well:
+
+          <ul>
+            <li> <a href="http://pub.dartlang.org/packages/bot">BOT</a>,
+              the Dart bag-of-tricks</li>
+            <li> <a href="https://github.com/igrigorik/heroku-buildpack-dart">Heroku buildpack for Dart</a>,
+              which lets you run your server-side Dart app
+              on Heroku's cloud</li>
+          </ul>
+        </dd>
+    </dl>
   </div>
 </div>