Update readme

README.rst

@@ -2,8 +2,19 @@
 fibgrid
 =======
 
-Creating Fibonacci grid and read pre-computed grids.
+.. image:: https://github.com/TUW-GEO/fibgrid/workflows/ci.yml/badge.svg
+   :target: https://github.com/TUW-GEO/fibgrid/actions/workflows/ci.yml
+
+.. image:: https://coveralls.io/repos/github/TUW-GEO/fibgrid/badge.svg?branch=master
+   :target: https://coveralls.io/github/TUW-GEO/fibgrid?branch=master
+
+.. image:: https://badge.fury.io/py/fibgrid.svg
+    :target: http://badge.fury.io/py/fibgrid
 
+.. image:: https://readthedocs.org/projects/fibgrid/badge/?version=latest
+   :target: http://fibgrid.readthedocs.org/
+
+Creating Fibonacci grid and read pre-computed grids.
 
 .. _pyscaffold-notes: