Add node modules and new code for release (#57)

Co-authored-by: taakleton <taakleton@users.noreply.github.com>

node_modules/v8-to-istanbul/index.js

@@ -0,0 +1,5 @@
+const V8ToIstanbul = require('./lib/v8-to-istanbul')
+
+module.exports = function (path, wrapperLength, sources, excludePath) {
+  return new V8ToIstanbul(path, wrapperLength, sources, excludePath)
+}