Added TreeSearch and lots of cleaning up/improvements.

* Added watch for gulp.
* Updated README
* Various bug fixes and improvements.

Cleaning up and debugging. Gulp can now watch.

Change-Id: Ice679a326ff693fa030caf429c3c29ba94ae00cd
diff --git a/client/catalog-dev/css/style.css b/client/catalog-dev/css/style.css
index 94ea89f..17ba979 100644
--- a/client/catalog-dev/css/style.css
+++ b/client/catalog-dev/css/style.css
@@ -142,6 +142,10 @@
   cursor: pointer;
 }
 
+.treeExplorer .treeExplorerNode .nodeContent {
+  display: inline-block;
+}
+
 .treeExplorer .treeExplorerNode > .nodeChildren {
   display: none;
 }
@@ -168,6 +172,14 @@
   content: "\e022"
 }
 
+.treeExplorer .treeSearch{
+  display: none;
+}
+
+.treeExplorer .nodeContent:hover > .treeSearch {
+  display: inline-block;
+}
+
 #popup {
   top: 0;
   left: 0;