Add CONTRIBUTING.md

Author: Djordje Atlialp

CONTRIBUTING.md

@@ -0,0 +1,4 @@
+
+# How to contribute
+
+If you spot any bugs, please use [Issue Tracker](https://github.com/rhazdon/hugo-theme-hello-friend-ng/issues) or if you want to add a new feature directly please create a new [Pull Request](https://github.com/rhazdon/hugo-theme-hello-friend-ng/pulls).