Add node modules and new code for release (#39)

Co-authored-by: tbarnes94 <tbarnes94@users.noreply.github.com>

node_modules/source-map-resolve/lib/resolve-url.js

@@ -0,0 +1,9 @@
+var url = require("url")
+
+function resolveUrl(/* ...urls */) {
+  return Array.prototype.reduce.call(arguments, function(resolved, nextUrl) {
+    return url.resolve(resolved, nextUrl)
+  })
+}
+
+module.exports = resolveUrl