make it mergeable with official repo

Author: doluk

coc/hero.py

@@ -1,8 +1,6 @@
 from typing import TYPE_CHECKING, Dict, List, Type
 from pathlib import Path
 
-from attr import dataclass
-
 from .abc import DataContainer, DataContainerHolder
 
 if TYPE_CHECKING:
@@ -108,7 +106,7 @@ class HeroHolder(DataContainerHolder):
     data_object = Hero
 
 
-@dataclass
+
 class Pet(DataContainer):
     """Represents a Pet object as returned by the API, optionally filled with game data.
 

docs/code_overview/client.rst

@@ -16,16 +16,9 @@ Example
 ~~~~~~~
 .. code-block:: python3
 
-    import asyncio
     import coc
 
-    async def main():
-        async with coc.Client() as coc_client:
-            await coc_client.login("email", "password")
-
-        # do stuff
-
-    asyncio.run(main())
+    client = coc.login("email", "password", key_names="keys for my windows pc", key_count=5)
 
 With the returned instance, you can complete any of the operations detailed below.