feat: Add json example

Author: robertleeplummerjr

examples/json-saving.js

@@ -0,0 +1,17 @@
+const { GPU } = require('../src');
+const gpu1 = new GPU();
+
+const kernel1 = gpu1.createKernel(function(value) {
+  return value * 100;
+}, { output: [1] });
+
+const resultFromRegularKernel = kernel1(42);
+const json = kernel1.toJSON();
+console.log(resultFromRegularKernel);
+
+// Use bin/gpu-browser-core.js to get "CORE" mode, which works only with JSON
+const gpu2 = new GPU();
+const kernel2 = gpu2.createKernel(json);
+const resultFromJsonKernel = kernel2(42);
+console.log(resultFromJsonKernel);
+