Merge pull request #285 from lorenzwalthert/github

- Clarify labelling strategy (#285).

Author: lorenzwalthert

.Rbuildignore

@@ -9,3 +9,4 @@
 ^\.travis\.yml$
 ^docs$
 ^_pkgdown\.yml$
+CONTRIBUTING.md

CONTRIBUTING.md

@@ -0,0 +1,4 @@
+# Issue Management
+
+This project follows the issue management recommendations outlined by [saamwerk](https://github.com/lorenzwalthert/saamwerk/blob/master/issue-management/labelling-strategy.md).
+In particular, issues labelled with `Status: Postponed` are closed even if they are not resolved.