Add js script to test wasm bindgen

Author: gridbugs

tests/wasm_bindgen/js/index.js

@@ -0,0 +1,7 @@
+'use strict';
+
+const rand_wasm_bindgen_test = require('./rand_wasm_bindgen_test');
+
+console.log(rand_wasm_bindgen_test.generate_from_entropy())
+console.log(rand_wasm_bindgen_test.generate_from_os_rand())
+console.log(rand_wasm_bindgen_test.generate_from_seed())