fix(package): update @angular/router to version 6.0.3

Closes #41

Author: greenkeeper[bot]

package.json

@@ -20,7 +20,7 @@
     "@angular/http": "^5.0.0",
     "@angular/platform-browser": "^5.0.2",
     "@angular/platform-browser-dynamic": "^5.0.2",
-    "@angular/router": "^5.0.2",
+    "@angular/router": "^6.0.3",
     "bootstrap": "^3.3.7",
     "core-js": "^2.4.1",
     "rxjs": "^5.4.1",