Add Preferences class, empty for now

__init__.py

@@ -10,11 +10,12 @@ bl_info = {
 }
 
 
-from . import ui, operators
+from . import ui, operators, preferences
 
 modules = (
     ui,
     operators,
+    preferences
 )
 
 

preferences.py

@@ -0,0 +1,22 @@
+import bpy
+from bpy.types import AddonPreferences
+from bpy.props import BoolProperty
+
+
+class NodeKitPreferences(AddonPreferences):
+    bl_idname = __package__
+
+classes = (
+    NodeKitPreferences,
+)
+
+
+def register():
+    for c in classes:
+        bpy.utils.register_class(c)
+
+
+def unregister():
+    for c in reversed(classes):
+        bpy.utils.unregister_class(c)
+