upgrade to reveal.js-3.3.0
diff --git a/inst/reveal.js-3.3.0/plugin/multiplex/package.json b/inst/reveal.js-3.3.0/plugin/multiplex/package.json
new file mode 100644
index 0000000..368bfd6
--- /dev/null
+++ b/inst/reveal.js-3.3.0/plugin/multiplex/package.json
@@ -0,0 +1,19 @@
+{
+  "name": "reveal-js-multiplex",
+  "version": "1.0.0",
+  "description": "reveal.js multiplex server",
+  "homepage": "http://lab.hakim.se/reveal-js",
+  "scripts": {
+    "start": "node index.js"
+  },
+  "engines": {
+    "node": "~4.1.1"
+  },
+  "dependencies": {
+    "express": "~4.13.3",
+    "grunt-cli": "~0.1.13",
+    "mustache": "~2.2.1",
+    "socket.io": "~1.3.7"
+  },
+  "license": "MIT"
+}