Renaming and moving stuff around so install can be done easy in ComfyUI

OneButtonPromptNodes.py

@@ -186,7 +186,7 @@ class SavePromptToFile:
         directoryandfilename = os.path.abspath(os.path.join(output_directory, filenamecomplete))
         
 
-        with open(directoryandfilename, 'w') as file:
+        with open(directoryandfilename, 'w', encoding="utf-8") as file:
             file.write("prompt: " + positive_prompt + "\n")
             file.write("negative prompt: " + negative_prompt + "\n")
 

__init__.py

@@ -0,0 +1,3 @@
+from .OneButtonPromptNodes import NODE_CLASS_MAPPINGS, NODE_DISPLAY_NAME_MAPPINGS
+
+__all__ = ['NODE_CLASS_MAPPINGS', 'NODE_DISPLAY_NAME_MAPPINGS']