use webpack instead of jspm

.gitignore

@@ -1,8 +1,4 @@
 
-jspm_packages
-
 node_modules
 
-example/test.html
-
 lib

.npmignore

@@ -0,0 +1,4 @@
+
+node_modules
+
+example

example/index.js

@@ -1,8 +1,7 @@
-import { transfer } from '/src/index.js';
-import Worker from 'worker/WorkerShim';
-import workerSrc from './worker.js!worker';
+import { transfer } from 'src/index.js';
+import CanvasWorker from './worker.js';
 
-const worker = new Worker(workerSrc);
+const worker = new CanvasWorker();
 
 worker.addEventListener('message', ({ data }) => {
   const canvas = transfer.decode(data);

example/worker.js

@@ -1,4 +1,4 @@
-import { Canvas, Image, transfer } from '/src/index.js';
+import { Canvas, Image, transfer } from 'src/index.js';
 
 const canvas = new Canvas(300, 300);
 const context = canvas.getContext('2d');