use upstream js-yaml

Fix #132

Author: isaacs

package.json

@@ -18,7 +18,7 @@
     "exit-code": "^1.0.1",
     "glob": "^4.4.1",
     "inherits": "*",
-    "js-yaml": "git://github.com/isaacs/js-yaml",
+    "js-yaml": "^3.3.1",
     "mkdirp": "^0.5.0",
     "nopt": "^3.0.1",
     "runforcover": "~0.0.2",