added tsjest to package

Author: hs

package.json

@@ -45,6 +45,7 @@
     "grunt-webpack": "^3.1.2",
     "jest": "^23.4.2",
     "tslint": "^4.5.1",
+    "ts-jest": "^23.0.1",
     "typedoc": "^0.11.1",
     "typescript": "^2.9.2",
     "uglifyjs-webpack-plugin": "^1.2.5",