Update Documentation

Edits in bitia-cli documentation with tagged-sectons for installation an configurations

docs/source/getting_started/Installation.md

@@ -26,19 +26,45 @@ To Install **BiTIA** using pip, run this command:
   ```{eval-rst}
   .. tabs::
 
-    .. tab:: Linux
+    .. group-tab:: Unix
 
-           $ python3 -m pip install bitia
+              ..  code-block:: bash
+                      
+                     $ python3 -m pip install bitia
 
-    .. tab:: MacOS
 
-           $ python3 -m pip install bitia
+    .. group-tab:: Windows
+              ..  code-block:: bash
+                     
+                     $ python3 -m pip install bitia
+  ```
 
-    .. tab:: Windows
+**Configuration**
 
-           $ python3 -m pip install bitia
-  ```
 
+TODO: Order of searching configuration file.
+
+
+  ```{eval-rst}
+  .. tabs::
+
+    .. group-tab:: Unix
+
+              ..  code-block:: bash
+
+                  1. ./bitia.toml  
+                  2. ~/.bitia.toml  
+                  3. $HOME/.config/bitia.toml  
+                  4. /etc/bitia.toml
+
+    .. group-tab:: Windows
+           
+              ..  code-block:: bash
+
+                     1. bitia.toml
+                     2. %APPDATA%\bitia.toml
+                     3. %PROGRAMDATA%\bitia.toml
+  ```
 
 [BiTIA]: https://pypi.org/project/bitia/
 [Pypi]: https://pypi.org/