Add ij1-builds to footer table

Author: ctrueden

footer.html

@@ -25,6 +25,11 @@
 <td class="badge">-</td>
 </tr>
 <tr>
+<td><a href="https://github.com/imagej/ij1-builds">imagej/ij1-builds</a></td>
+<td class="badge"><a href="https://travis-ci.com/imagej/ij1-builds"><img src="https://travis-ci.com/imagej/ij1-builds.svg?branch=master"></a></td>
+<td class="badge">-</td>
+</tr>
+<tr>
 <td><a href="https://github.com/imagej/imagej-javadoc">imagej/imagej-javadoc</a></td>
 <td class="badge"><a href="https://travis-ci.org/imagej/imagej-javadoc"><img src="https://travis-ci.org/imagej/imagej-javadoc.svg?branch=master"></a></td>
 <td class="badge">-</td>