added unit testing, and started implementing unit tests...phew

node_modules/resolve-dir/index.js

@@ -0,0 +1,22 @@
+/*!
+ * resolve-dir <https://github.com/jonschlinkert/resolve-dir>
+ *
+ * Copyright (c) 2015, Jon Schlinkert.
+ * Licensed under the MIT License.
+ */
+
+'use strict';
+
+var path = require('path');
+var expand = require('expand-tilde');
+var gm = require('global-modules');
+
+module.exports = function resolveDir(dir) {
+  if (dir.charAt(0) === '~') {
+    dir = expand(dir);
+  }
+  if (dir.charAt(0) === '@') {
+    dir = path.join(gm, dir.slice(1));
+  }
+  return dir;
+};