Use coverall instead of codecov.

Author: PytLab

README.rst

@@ -7,11 +7,12 @@ VASPy
     :alt: Build Status
 
 .. image:: https://landscape.io/github/PytLab/VASPy/master/landscape.svg?style=flat
-   :target: https://landscape.io/github/PytLab/VASPy/master
-   :alt: Code Health
+    :target: https://landscape.io/github/PytLab/VASPy/master
+    :alt: Code Health
+
+.. image:: https://coveralls.io/repos/github/PytLab/VASPy/badge.svg?branch=master
+    :target: https://coveralls.io/github/PytLab/VASPy?branch=master
 
-.. image:: https://codecov.io/gh/PytLab/VASPy/branch/master/graph/badge.svg
-  :target: https://codecov.io/gh/PytLab/VASPy
 
 .. image:: https://img.shields.io/badge/python-3.5, 2.7-green.svg
     :target: https://www.python.org/downloads/release/python-351/

setup.py

@@ -20,11 +20,11 @@
     :alt: Build Status
 
 .. image:: https://landscape.io/github/PytLab/VASPy/master/landscape.svg?style=flat
-   :target: https://landscape.io/github/PytLab/VASPy/master
-   :alt: Code Health
+    :target: https://landscape.io/github/PytLab/VASPy/master
+    :alt: Code Health
 
-.. image:: https://codecov.io/gh/PytLab/VASPy/branch/master/graph/badge.svg
-  :target: https://codecov.io/gh/PytLab/VASPy
+.. image:: https://coveralls.io/repos/github/PytLab/VASPy/badge.svg?branch=master
+    :target: https://coveralls.io/github/PytLab/VASPy?branch=master
 
 .. image:: https://img.shields.io/badge/python-3.5, 2.7-green.svg
     :target: https://www.python.org/downloads/release/python-351/