Release version 0.5

Update Changelog etc. to match

Change-Id: I2e55775f5239f674a432245a557f56056bba8f12
diff --git a/admin.py b/admin.py
index 1b345ee..a6bf735 100755
--- a/admin.py
+++ b/admin.py
@@ -31,7 +31,7 @@
 from config.config import VlanConfig
 from ipc.ipc import VlanIpc
 
-version = "0.5-DEV"
+version = "0.5"
 banner = "Linaro VLANd admin interface, version %s" % version
 
 TRUNK_ID_NONE = -1