Update README

Author: abartesaghi

README.md

@@ -1,6 +1,12 @@
-# Post-processing of cryo-EM maps and generation of FSC curves corrected by masking effects
+# postprocessing.py
 
-> **_NOTE:_**  The code in [postprocessing.py](postprocessing.py) was adapted from: https://github.com/C-CINA/focustools and is distributed under the [GPL-3.0 license](LICENSE)
+## Description
+
+Post-processing of cryo-EM maps and generation of FSC curves corrected by masking effects
+
+> **_NOTE:_**  The code in [postprocessing.py](postprocessing.py) was adapted from [https://github.com/C-CINA/focustools](https://github.com/C-CINA/focustools) and is distributed under the [GPL-3.0 license](LICENSE)
+
+## Usage
 
 At a minimum, two half maps should be provided as input. To see all available options type: