fix(package): update @angular/core to version 5.1.0

Closes #107

Author: greenkeeper[bot]

package.json

@@ -29,7 +29,7 @@
     "@angular/cdk": "^2.0.0-beta.10",
     "@angular/common": "^4.3.6",
     "@angular/compiler": "^4.3.6",
-    "@angular/core": "^4.3.6",
+    "@angular/core": "^5.1.0",
     "@angular/forms": "^4.3.6",
     "@angular/http": "^4.3.6",
     "@angular/material": "^2.0.0-beta.10",