bump version to 2.2.0

Change-Id: I5fdb3bf01fafdea6d43d7bd8a9a5048e916b987f
diff --git a/DESCRIPTION b/DESCRIPTION
index 99771fb..91e5c42 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,6 +1,6 @@
 Package: posterdown.ids
 Title: Generate IDS CD compliant PDF Conference Posters Using R Markdown
-Version: 2.1.0
+Version: 2.2.0
 Authors@R: 
     c(person(given = "Marc",
              family = "Kupietz",