bump version number

Lars Kotthoff · Lars Kotthoff · commit 094f7a19736d · 2015-11-26T09:18:19.000-08:00
diff --git a/DESCRIPTION b/DESCRIPTION
@@ -130,6 +130,6 @@ Suggests:
     XML
 LazyData: yes
 ByteCompile: yes
-Version: 2.6
+Version: 2.7
 VignetteBuilder: knitr
 RoxygenNote: 5.0.1
