chore(package): update @angular/compiler-cli to version 5.2.1

Closes #13

Author: greenkeeper[bot]

package.json

@@ -62,7 +62,7 @@
   "devDependencies": {
     "@angular/common": "^4.0.0",
     "@angular/compiler": "^4.0.0",
-    "@angular/compiler-cli": "^4.0.0",
+    "@angular/compiler-cli": "^5.2.1",
     "@angular/core": "^4.0.0",
     "@angular/forms": "^4.0.0",
     "@angular/platform-browser": "^4.0.0",