Added video streaming and sample file

Added bigbuck.mp4, the sample file
Install nodemon module for streaming
Modified  index.html to contain the video, and changed the title
Modified index.js to add /video dir for the video streaming

package.json

@@ -10,6 +10,7 @@
   "license": "ISC",
   "dependencies": {
     "express": "^4.18.2",
+    "nodemon": "^2.0.22",
     "ws": "^8.13.0"
   }
 }