Add swck binary package link to download page (#151)

* Update downloads-block.html
diff --git a/layouts/shortcodes/downloads-block.html b/layouts/shortcodes/downloads-block.html
index 37767ef..3f3ef90 100755
--- a/layouts/shortcodes/downloads-block.html
+++ b/layouts/shortcodes/downloads-block.html
@@ -259,7 +259,21 @@
                         </div>
                     </div>
                 </div>
+                <div class="btn-group">
+                    <button type="button" class="btn btn-sm dropdown-toggle" data-toggle="dropdown" aria-haspopup="true"
+                            aria-expanded="false">
+                        Distribution
+                    </button>
+                    <div class="dropdown-menu">
+                        <h6 class="dropdown-header">v0.1.0<span> | Nov. 16th, 2020</span></h6>
+                        <div class="dropdown-item" href="#">
+                            [<a href="https://www.apache.org/dyn/closer.cgi/skywalking/swck/0.1.0/skywalking-swck-0.1.0-bin.tgz">tar</a>]
+                            [<a href="https://downloads.apache.org/skywalking/swck/0.1.0/skywalking-swck-0.1.0-bin.tgz.asc">asc</a>]
+                            [<a href="https://downloads.apache.org/skywalking/swck/0.1.0/skywalking-swck-0.1.0-bin.tgz.sha512">sha512</a>]
+                        </div>
 
+                    </div>
+                </div>
             </div>
 
         </div>