Update README.rst

README.rst

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 fntlib
 ======
 
-**fntlib** is a Python library to interact with bitmap font (.fnt) files. It offers a simple modern Pythonic API and an intuitive workflow with an object oriented design.
+**fntlib** is a Python library to interact with bitmap font (.fnt) files. It offers a simple modern Pythonic API and an intuitive workflow with an object oriented design.
+
+Author
+----
+Jaan#2897
+
+Usage
+----
+First, you should load your .fnt file by using `fntlib.load` or `fntlib.loads`::
+
+  with open(path_to_file, 'rb') as f: # the file should be in bytes!
+      fnt = fntlib.load(f) # or fnt = fntlib.loads(f.read())
+
+Next, feel free to edit whatever property you want :)
+
+While writing and documenting this module, i've been using `the Angelcode's documentation <https://www.angelcode.com/products/bmfont/doc/file_format.html>`_ of the .fnt format.
+
+In VS Code, you can press F12 with any fntlib's function and it will bring you to its definition and the definition of the classes parameters.
+
+Finally, after all your edits, you will need to dump the .fnt to some location::
+
+  with open(path_to_output_file, 'wb') as f: # # the file should be in bytes!
+      fntlib.dump(fnt, f) # or fp.write(fntlib.dumps(fnt))
+      
+If you still have questions, text me in my discord (Jaan#2897) or check the `tests/example/test_main.py` file.