Updates the grunt-ngdocs version to the new custom version

Updates the node dependencies to point at the new version of our custom grunt-ngdocs

Author: JLLeitschuh

package.json

@@ -50,7 +50,7 @@
     "karma-script-launcher": "~0.1",
     "grunt-karma": "~0.8",
     "marked": "~0.2",
-    "grunt-ngdocs": "https://github.com/c0bra/grunt-ngdocs/tarball/0.1.7-custom19",
+    "grunt-ngdocs": "https://github.com/c0bra/grunt-ngdocs/tarball/0.2.7-custom2",
     "grunt-conventional-changelog": "~1.0.0",
     "grunt-gh-pages": "~0.9.0",
     "semver": "~2.2.1",