Update quickstart.html: Fixing links & deleting demo GIFs

As announced in #844

Author: ThomasLandauer

quickstart.html

@@ -61,7 +61,7 @@ <h4 class="panel-title">1.Install</h4>
             <div class="panel-heading"><h4 class="panel-title">3. Create Test</h4></div>
             <div class="panel-body">
               <p>Generate your first acceptance test. Acceptance tests emulate the behavior
-                of a real user visiting your site. (For details, see <a href="/docs/03-AcceptanceTests" class="btn btn-secondary">Acceptance Testing Guide)</a></p>
+                of a real user visiting your site.<br><a href="/docs/AcceptanceTests" class="btn btn-secondary">Acceptance Testing Guide &raquo;</a></p>
               <div class="highlight">
                 <p>
                 <pre>php vendor/bin/codecept generate:cest Acceptance First</pre>
@@ -143,15 +143,7 @@ <h4>Acceptance Testing (only)</h4>
               <pre>php vendor/bin/codecept init Acceptance</pre>
             </div>
 
-            <a class="btn btn-primary" aria-controls="acceptance-demo" role="button" data-toggle="collapse" href="#acceptance-demo" aria-expanded="false">
-              See Demo
-            </a> <a href="/docs/03-AcceptanceTests" class="btn btn-secondary">Acceptance Testing Guide &raquo;</a>
-
-            <div class="collapse" id="acceptance-demo">
-              <div class="panel-collapse-body">
-                <img src="/images/codecept_acceptance.gif" alt="codeception acceptance" class="img-responsive">
-              </div>
-            </div>
+            <a href="/docs/AcceptanceTests" class="btn btn-secondary">Acceptance Testing Guide &raquo;</a>
 
             <hr>