add support for toml config.

subject module added, supports callbacks.

events module added. Provides an event listener and callback trigger.

import isorted, code run through black.

toml section added to readme.

added a couple of examples.

README.md

@@ -1,7 +1,8 @@
 # obs_sdk
+
 ### A Python SDK for OBS Studio WebSocket v5.0
 
-This is a wrapper around OBS Websocket. 
+This is a wrapper around OBS Websocket.
 Not all endpoints in the official documentation are implemented. But all endpoints in the Requests section is implemented. You can find the relevant document using below link.
 [obs-websocket github page](https://github.com/obsproject/obs-websocket/blob/master/docs/generated/protocol.md#Requests)
 
@@ -11,14 +12,26 @@ Not all endpoints in the official documentation are implemented. But all endpoin
 pip install obsstudio-sdk
 ```
 
-
 ### How to Use
 
-* Import and start using
-  Required parameters are as follows:
-    host:       obs websocket server
-    port:       port to access server
-    password:   obs websocket server password
+-   Load connection info from toml config. A valid `config.toml` might look like this:
+
+```toml
+[connection]
+host = "localhost"
+port = 4455
+password = "mystrongpass"
+```
+
+It should be placed next to your `__main__.py` file.
+
+Otherwise:
+
+-   Import and start using
+    Parameters are as follows:
+    host: obs websocket server
+    port: port to access server
+    password: obs websocket server password
 
 ```
 >>>from obsstudio_sdk.reqs import ReqClient
@@ -26,12 +39,12 @@ pip install obsstudio-sdk
 >>>client = ReqClient('192.168.1.1', 4444, 'somepassword')
 ```
 
-Now you can make calls to OBS 
+Now you can make calls to OBS
 
-Example:  Toggle the mute state of your Mic input
+Example: Toggle the mute state of your Mic input
 
 ```
 >>>cl.ToggleInputMute('Mic/Aux')
 >>>
 
-```
+```