Start development of v0.5

Change-Id: I37ee3ac79a723a5d9ddd8cfe262f03b52517c0a8
diff --git a/admin.py b/admin.py
index d9b8cc6..1230c81 100755
--- a/admin.py
+++ b/admin.py
@@ -30,7 +30,7 @@
 from config.config import VlanConfig
 from ipc.ipc import VlanIpc
 
-version = "0.4"
+version = "0.5-DEV"
 banner = "Linaro VLANd admin interface, version %s" % version
 
 TRUNK_ID_NONE = -1