Sync docs from master to gh-pages

spring-cloud-release-tools.html

@@ -572,6 +572,9 @@ why this tool makes it easy to automate the release / dependency update process
 <li>
 <p>Generates a blog template under <code>target/blog.md</code> (ONLY FOR NON-SNAPSHOT VERSIONS)</p>
 </li>
+<li>
+<p>Generates a tweet template under <code>target/tweet.txt</code> (ONLY FOR NON-SNAPSHOT VERSIONS)</p>
+</li>
 </ul>
 </div>
 </div>