Bump to dev version 1.2.0.9000

Change-Id: I36c1895fd7a47ca012b907585c8b809b937eb447
diff --git a/DESCRIPTION b/DESCRIPTION
index 2c4ed78..24ee9ca 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,7 +1,7 @@
 Package: RKorAPClient
 Type: Package
 Title: 'KorAP' Web Service Client Package
-Version: 1.2.0
+Version: 1.2.0.9000
 Authors@R:
     c(person(given = "Marc",
              family = "Kupietz",