Upgrade to angularcontext v0.0.17 for bugfix.

v0.0.16 had an issue where $rootElement was unavailable during bootstrap,
which is problematic when there are directives present that expect to
be able to use it.

Author: Martin Atkins

package.json

@@ -14,7 +14,7 @@
         "lint": "jshint -c .jshintrc lib/* tests/*"
     },
     "dependencies": {
-        "angularcontext": "0.0.16",
+        "angularcontext": "0.0.17",
         "escape-html": "1.0.0",
         "express": "~3.4.4"
     },