Defer plugin validation to init

senpy/plugins/__init__.py

@@ -49,11 +49,11 @@ class PluginMeta(models.BaseMeta):
         attrs['name'] = alias
         if 'description' not in attrs:
             doc = attrs.get('__doc__', None)
-            if not doc:
-                raise Exception(('Please, add a description or '
-                                 'documentation to class {}').format(name))
-            attrs['description'] = doc
-            attrs['name'] = alias
+            if doc:
+                attrs['description'] = doc
+            else:
+                logger.warn(('Plugin {} does not have a description. '
+                             'Please, add a short summary to help other developers').format(name))
         cls = super(PluginMeta, mcs).__new__(mcs, name, bases, attrs)
 
         if alias in mcs._classes: