docs: Added release notes for Build Tools 19.1.0

Change-Id: Icd162f7b1b7634b7b503d6d39a17fcb1c43a74c9
diff --git a/docs/html/tools/revisions/build-tools.jd b/docs/html/tools/revisions/build-tools.jd
index c3c83ef..d8abab0 100644
--- a/docs/html/tools/revisions/build-tools.jd
+++ b/docs/html/tools/revisions/build-tools.jd
@@ -77,6 +77,26 @@
 <div class="toggle-content opened">
   <p><a href="#" onclick="return toggleContent(this)">
     <img src="{@docRoot}assets/images/triangle-opened.png" class="toggle-content-img"
+      alt=""/>Build Tools, Revision 19.1.0</a> <em>(May 2014)</em>
+  </p>
+  <div class="toggle-content-toggleme">
+
+    <dl>
+      <dt>General Notes:</dt>
+      <dd>
+        <ul>
+          <li>Added <code>zipalign</code> to the Build Tools.</li>
+          <li>Modified <code>aapt</code> to ignore XML files that fail to compile.</li>
+        </ul>
+      </dd>
+    </dl>
+
+  </div>
+</div>
+
+<div class="toggle-content closed">
+  <p><a href="#" onclick="return toggleContent(this)">
+    <img src="{@docRoot}assets/images/triangle-closed.png" class="toggle-content-img"
       alt=""/>Build Tools, Revision 19.0.3</a> <em>(March 2014)</em>
   </p>
   <div class="toggle-content-toggleme">