Integrate links to the catalog from the front page

Change some of the text on the front page to link to the new entity catalog page (interim step to getting the catalog page fully integrated into the menu structure)
diff --git a/index.md b/index.md
index 1f23a9b..ffff6df 100644
--- a/index.md
+++ b/index.md
@@ -26,10 +26,10 @@
 
 *Blueprints* describe your application, stored as *text files* in *version control*
 
-*Compose* from the *dozens* of app supported components or your *own components* using *bash, Java, Chef...*
+*Compose* from the [*dozens* of supported components](learnmore/catalog/) or your *own components* using *bash, Java, Chef...*
 
 <div class="text-muted" markdown="1">
-#### JBoss &bull; Cassandra &bull; QPid &bull; nginx &bull; many more
+#### JBoss &bull; Cassandra &bull; QPid &bull; nginx &bull; [many more](learnmore/catalog/)
 </div>
 
 </div>