bump version to 4.1

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
diff --git a/version.sh b/version.sh
index ab53806..50c888b 100755
--- a/version.sh
+++ b/version.sh
@@ -1,6 +1,6 @@
 #!/bin/sh
 
-VERSION="4.0"
+VERSION="4.1"
 OUT="$1"
 
 if [ -d .git ] && head=`git rev-parse --verify HEAD 2>/dev/null`; then