chore(package): update typedoc to version 0.15.2

Closes #9

Author: greenkeeper[bot]

package.json

@@ -52,7 +52,7 @@
         "@ionic/app-scripts": "^3.1.7",
         "@types/d3": "^4.12.0",
         "tslint-ionic-rules": "0.0.13",
-        "typedoc": "^0.10.0",
+        "typedoc": "^0.15.2",
         "typescript": "^2.6.2"
     },
     "description": "D3.js in a Ionic mobile application: examples",