Fix docs for readthedocs.org

docs/source/plugins/introduction.rst

@@ -0,0 +1,46 @@
+Plugins: An introduction
+========================
+
+Plugins provide a neat way to extend Houdini's functionality. Here is an example!
+
+
+.. code-block:: python
+
+    from houdini import handlers
+    from houdini.handlers import XTPacket
+
+    from houdini.plugins import IPlugin
+    from houdini import commands
+
+    from houdini import permissions
+
+    class Example(IPlugin):
+        author = "Ben"
+        description = "Example plugin for developers"
+        version = "1.0.0"
+
+        def __init__(self, server):
+            super().__init__(server)
+
+        async def ready(self):
+            self.server.logger.info('Example.ready()')
+            await self.server.permissions.insert(name='houdini.ping')
+
+        async def message_cooling(self, p):
+            print(f'{p}, Message was sent during cooldown')
+
+        @handlers.handler(XTPacket('m', 'sm'))
+        @handlers.cooldown(1, callback=message_cooling)
+        async def handle_send_message(self, p, penguin_id: int, message: str):
+            print(f'Do stuff with {message}')
+
+        @commands.command('ping')
+        @permissions.has('houdini.ping')
+        async def ping(self, p):
+            await p.send_xt('cprompt', 'Pong')
+
+        @commands.command('ac')
+        async def add_coins(self, p, amount: int = 100):
+            await p.add_coins(amount, stay=True)
+
+This page is a WIP!