Adding webpack to make this project consumable in modern web frameworks (brownhci#142)

* Adding webpack to make this project consumable in modern web frameworks
* add utils and dist folder to use it in examples
* enable video preview flag
* ensure project build successfully before code commit
* Add licence, src-maps, cleanup
* include tfjs union package, support es-modules.
* remove source maps
* exclude generated files from repo

Author: fxnoob

.gitignore

@@ -31,3 +31,6 @@ node_modules/
 www/node_modules/
 build/webgazer.js
 build/webgazer.min.js
+.idea/
+dist/
+dist2/

Gruntfile.js

@@ -20,20 +20,31 @@ WebGazer.js is an eye tracking library that uses common webcams to infer the eye
 If you want to build the repository from source follow these instructions:
 
     # Ensure NodeJS is downloaded: https://nodejs.org/en/download/
-    # Install grunt-cli if not installed (this may require you to use `sudo` or run the console as Administrator)
-    npm install -g grunt-cli
     git clone https://github.com/brownhci/WebGazer.git
     cd WebGazer
+    #install the dependencies
     npm install
-    # Run grunt to build the webgazer.js and webgazer.min.js file in the build directory
-    grunt
+    #build the project
+    npm run build
 
 <!-- To use the webgazer script in the head of an HTML file add the `async` tag to ensure the clmtrackr does not collapse to a slower version -->
 
 ## Examples
 
 Examples of how WebGazer.js works can be found [here](https://webgazer.cs.brown.edu/#examples).
 
+### to use in any modern framework
+
+````  
+const webgazer = require('webgazer.js'); // npm package 'webgazer.js' is sync with this repository
+```` 
+
+or you can you do
+
+```` 
+import webgazer from 'webgazer.js'
+````
+
 ### How to run the Example HTML files
 
 Within the /www directory there are two example HTML files:

README.md

@@ -1,7 +1,6 @@
 
 console.log('thread starting');
-//importScripts('../src/util.js', '../src/mat.js');
-@import "src/mat.js"
+importScripts('../src/worker_scripts/util.js', '../src/worker_scripts/mat.js');
 var ridgeParameter = Math.pow(10,-5);
 var resizeWidth = 10;
 var resizeHeight = 6;