Add node modules and compiled JavaScript from main (#172)

Co-authored-by: Oliver King <oking3@uncc.edu>

node_modules/spdx-expression-parse/index.js

@@ -0,0 +1,8 @@
+'use strict'
+
+var scan = require('./scan')
+var parse = require('./parse')
+
+module.exports = function (source) {
+  return parse(scan(source))
+}