Update README badges

README.rst

@@ -10,9 +10,17 @@ PhotoManager
      :target: https://codecov.io/gh/aaronkollasch/photomanager
      :alt: Test Coverage
 
-.. image:: https://img.shields.io/lgtm/grade/python/g/aaronkollasch/photomanager.svg?logo=lgtm&logoWidth=18
-     :target: https://lgtm.com/projects/g/aaronkollasch/photomanager/context:python
-     :alt: Language grade: Python
+.. image:: http://www.mypy-lang.org/static/mypy_badge.svg
+     :target: http://mypy-lang.org/
+     :alt: Checked with mypy
+
+.. image:: https://img.shields.io/badge/code%20style-black-000000.svg
+     :target: https://github.com/psf/black
+     :alt: Code style: black
+
+.. image:: https://img.shields.io/badge/%20imports-isort-%231674b1?style=flat&labelColor=ef8336
+     :target: https://pycqa.github.io/isort/
+     :alt: Imports: isort
 
 A manager for photos and other media files.