Two new particle examples and a group animation example. Also fixed CocoonJS sound issue and Cache sound locked bug.

examples/_site/examples.json

@@ -4,6 +4,10 @@
       "file": "change+texture+on+click.js",
       "title": "change texture on click"
     },
+    {
+      "file": "group+creation.js",
+      "title": "group creation"
+    },
     {
       "file": "local+json+object.js",
       "title": "local json object"
@@ -542,10 +546,18 @@
       "file": "no+rotation.js",
       "title": "no rotation"
     },
+    {
+      "file": "rain.js",
+      "title": "rain"
+    },
     {
       "file": "random+sprite.js",
       "title": "random sprite"
     },
+    {
+      "file": "snow.js",
+      "title": "snow"
+    },
     {
       "file": "when+particles+collide.js",
       "title": "when particles collide"