Update require-dir package - closes #179

Author: stephenlacy

package.json

@@ -14,7 +14,7 @@
     "fancy-log": "^1.3.2",
     "lodash.template": "^4.4.0",
     "plugin-error": "^0.1.2",
-    "require-dir": "^0.3.2",
+    "require-dir": "^1.0.0",
     "strip-bom-stream": "^3.0.0",
     "through2": "^2.0.3",
     "vinyl": "^2.0.1"