fix(package): update class-transformer to version 0.2.2

Closes #25

Author: greenkeeper[bot]

package.json

@@ -53,7 +53,7 @@
     "typedoc": "^0.10.0",
     "ts-node": "^4.1.0",
     "del-cli": "^1.1.0",
-    "class-transformer": "^0.1.8",
+    "class-transformer": "^0.2.2",
     "class-validator": "^0.8.0",
     "connection-string": "^0.4.1",
     "dotenv": "^5.0.0",