Adding dependabot configuration

Author: mkaring

.github/dependabot.yml

@@ -0,0 +1,19 @@
+# To get started with Dependabot version updates, you'll need to specify which
+# package ecosystems to update and where the package manifests are located.
+# Please see the documentation for all configuration options:
+# https://help.github.com/github/administering-a-repository/configuration-options-for-dependency-updates
+
+version: 2
+updates:
+  - package-ecosystem: "nuget"
+    directory: "/"
+    schedule:
+      interval: "daily"
+    target-branch: "master"
+    ignore:
+      - dependency-name: "Microsoft.Build.Tasks.Core"
+        versions: ["16.*"]
+    labels:
+      - "dependencies"
+    reviewers:
+      - "mkaring"