Fix ntypescript version for testing

Author: blakeembrey

package.json

@@ -50,7 +50,7 @@
     "istanbul": "^0.3.17",
     "mocha": "^2.1.0",
     "node-libs-browser": "^0.5.2",
-    "ntypescript": "^1.201507071002.1",
+    "ntypescript": "1.201507071002.1",
     "pre-commit": "^1.0.6",
     "typescript": "^1.5.3",
     "webpack": "^1.10.1"