[docs]: Restructuring the website and improving README

README.rst

@@ -21,12 +21,50 @@ minushalf
    :target: https://pepy.tech/project/minushalf
    :alt: Number of downloads
 
+The DFT -1/2 method
+-------------------------------
+
+DFT-1/2, an alternative way of referring to the LDA -1/2 _ and GGA -1/2 techniques , 
+is a method that method for approximate self-energy corrections within the framework of conventional Kohn-Sham DFT 
+which can be used not only with the local density approximation (LDA), but also with the generalized gradient approximation (GGA).
+
+The method aims to predict energy gaps results with the same precision  as the quasiparticle correction  algorithm, considered 
+the state of the art for calculating energy gap of semiconductors. In addition, the computational effort of the method 
+is equivalent to the standard DFT approach and and is three orders of magnitude lower than the aforementioned GW method, which allows the technique to be applied to complex systems.
+
+.. figure:: docs/source/images/dft_05_demonstration.png
+   :align: center
+   :width: 600
+
+   Fig 1. Comparison of calculated band gaps with experiment. The red square are the SCF LDA-1/2 (standard
+   LDA-1/2). The crosses are standard LDA. The small gap semiconductors are metals (negative gaps), when calculated with
+   LDA. LDA-1/2 corrects the situation. The band structure calculations were made with the codes VASP  and WIEN2k. 
+
+
 What is minushalf?
 ----------------------
-Minushalf is a CLI developed by GMSN that aims to automate 
-the application of the DFT -1/2 method. The commands available in this 
-CLI automate both the entire process and each of its steps in order to be 
-used by the user for any purposes.
+
+Minushalf is a command line interface (CLI) developed by the group of semiconductor materials and nanotechnology (`GMSN <http://www.gmsn.ita.br/>`_) that aims to automate 
+the application of the DFT -1/2 method. The commands available in this  CLI automate both the entire process and each of its steps in order to be 
+used for several purposes.
+
+Installation
+------------------
+The minushalf CLI can be easily installed by PyPI with the following command.
+
+.. code-block:: console
+
+    $ pip install minushalf
+
+Requirements
+--------------
+The minushalf CLI was built in order to automate the application of the DFT -1/2 method. 
+Thus, as the method requires the calculation of eigenvalues for each kpoint and band, 
+it is necessary to install some software that performs ab initio calculations. 
+Currently, the following softwares are supported by the program:
+
+- VASP 
+
 
 More information
 ------------------------

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