chore(package): update ts-node to version 4.0.0 (#44)

Author: greenkeeper[bot]

package.json

@@ -19,7 +19,7 @@
     "onchange": "^3.2.1",
     "tap-spec": "^4.1.1",
     "text-buffer": "13.9.2",
-    "ts-node": "^3.1.0",
+    "ts-node": "^4.0.0",
     "tslint": "^5.4.3",
     "tslint-config-typings": "^0.3.1",
     "typings": "^2.1.1"