Update Documentation

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

docs/source/getting_started/Installation.md

-# BiTIA Installation
-BiTIA CLI is the Command Interface tool helpful in getting user inputs with commands and required files, directories etc.
+# BiTIA 
+BiTIA CLI is the Command Line Interface Tool which helps in getting user inputs with commands, directories and required files. It sends tasks to the server, where bitia-runner processes them and generates results.
 
-This submits jobs to the server, which contains bitia-runner that works on the job and produce results
-
-**To work with BiTIA, we need to install bitia-cli and submit jobs to the server**
+**To work with BiTIA, we need to install bitia-cli and submit tasks to the server**
 ## Installing bitia
+BiTIA CLI is available on [PyPi] as [BiTIA].
+
 Installing bitia is very simple, you only need to have [python-pip] installed in your system
 
-BiTIA CLI is available on [PyPi] as [BiTIA].
-### Ensure you have a working pip
 
-As a first step, you should check that you have a working Python with pip
-installed. This can be done by running the following commands and making
-sure that the output looks similar.
 
-``` bash
-$ python --version
-Python 3.N.N
-$ pip --version
-pip X.Y.Z from ... (python 3.N.N)
-```
-If that worked, congratulations! You have a working pip in your environment.
 
+To Install **BiTIA** using pip, run this command:
+
+  ```{eval-rst}
+  .. tabs::
+
+    .. group-tab:: Unix
+
+              ..  code-block:: bash
+                      
+                     $ python3 -m pip install bitia
+
+
+    .. group-tab:: Windows
+              ..  code-block:: bash
+                     
+                     $ python3 -m pip install bitia
+  ```
+
+**Configuration**
+
+
+TODO: Order of searching configuration file.
+
+
+  ```{eval-rst}
+  .. tabs::
+
+    .. group-tab:: Unix
 
+              ..  code-block:: bash
 
-To Install **BiTIA** using pip:
+                  1. ./bitia.toml  
+                  2. ~/.bitia.toml  
+                  3. $HOME/.config/bitia.toml  
+                  4. /etc/bitia.toml
 
-```
-$ python3 -m pip install bitia
-```
+    .. 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/
-[install Python]: https://realpython.com/installing-python/
 [python-pip]: https://pypi.org/project/pip/ 
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