diff --git a/.coveragerc b/.coveragerc
new file mode 100644
index 0000000..d6b8b6a
--- /dev/null
+++ b/.coveragerc
@@ -0,0 +1,7 @@
+[report]
+exclude_lines =
+    pragma: no cover
+    def __repr__
+    raise AssertionError
+    raise NotImplementedError
+    if __name__ == .__main__.:
diff --git a/README.rst b/README.rst
index 95e110b..f26f0a8 100644
--- a/README.rst
+++ b/README.rst
@@ -5,6 +5,10 @@ Sigal - Simple Static Gallery Generator
    :target: https://travis-ci.org/saimn/sigal
    :alt: Travis-ci: continuous integration status.
 
+.. image:: https://coveralls.io/repos/saimn/sigal/badge.png?branch=master
+   :target: https://coveralls.io/r/saimn/sigal?branch=master
+   :alt: coveralls.io
+
 Sigal is yet another simple static gallery generator. It's written in Python
 and it allows to build a static gallery of images with the following features: