Update README and plugin meta infos

sma/README.md

@@ -5,6 +5,10 @@ nymea plug-in for SMA solar equipment.
 ## Supported Things
 
 * Sunny WebBox
+* SMA speedwire Meters
+* SMA speedwire Inverters
+
+> Note: the SMA battery equipment is still missing due to testing possibilities. Will be added as soon someone can with the apropriate setup.
 
 ## Requirements
 

sma/meta.json

@@ -8,6 +8,6 @@
         "network"
     ],
     "categories": [
-
+        "Energy"
     ]
 }