Blender Plugin for my Spacestation Generator

addon.py

import random

# This seems to be a well working system for loading the
# generator script, however I don't know
# wether it is required to look like this
if "bpy" in locals():
    import importlib
    importlib.reload(spacestation)
else:
    from . import spacestation

import bpy

# Info about this plugin
bl_info = {
    "name": "Spacestation Generator",
    "author": "Rahix",
    "version": (0, 1, 0),
    "blender": (2, 76, 0),
    "location": "View3D > Add > Mesh",
    "description": "Procedural Spacestation generator",
    "category": "Add Mesh"
}

# The Operator is a class
class GenerateSpacestation(bpy.types.Operator):
    # Id of this Operator
    bl_idname = "mesh.generate_spacestation"
    # Display name for the menu
    bl_label  = "Spacestation"
    bl_options = {'REGISTER', 'UNDO'}

    # Define all options for the generator
    use_seed = bpy.props.BoolProperty(default=False, name="Use Seed")
    seed = bpy.props.IntProperty(default=5, name="Seed (Requires 'Use Seed')")
    parts_min = bpy.props.IntProperty(default=3, min=0, name="Min. Parts")
    parts_max = bpy.props.IntProperty(default=8, min=3, name="Max. Parts")
    # ...
    storage_min = bpy.props.FloatProperty(default=0.5, min=0.1, name="Min. Storage height")
    storage_max = bpy.props.FloatProperty(default=1.0, min=0.1, name="Max. Storage height")

    def execute(self, context):
        # The actual code to execute the generator
        if not self.use_seed:
            seed = random.randint(0, 100000)
        else:
            seed = self.seed
        config = {
            "min_parts":      self.parts_min,
            "max_parts":      self.parts_max,
            # ...
            "storage_min":    self.storage_min,
            "storage_max":    self.storage_max
        }
        spacestation.generate_station(seed, config)
        return {'FINISHED'}

# Below is the code required for adding the Operator to Blender and the correct menu

def add_menu_entry(self, context):
    self.layout.operator(GenerateSpacestation.bl_idname, "Spacestation")

def register():
    bpy.utils.register_module(__name__)
    bpy.types.INFO_MT_mesh_add.append(add_menu_entry)

def unregister():
    bpy.utils.unregister_module(__name__)
    bpy.types.INFO_MT_mesh_add.remove(add_menu_entry)

if __name__ == "__main__":
    register()