Add coverage badge on readme using codecov

.travis.yml

@@ -14,6 +14,7 @@ before_install:
 # command to install dependencies
 install:
   - pip install -r requirements/requirements-common.txt
+  - pip install codecov
   - python setup.py develop
 
 # command to run tests and coverage
@@ -25,6 +26,7 @@ script:
 after_success:
   - coverage combine
   - coverage report
+  - codecov
 
 dist:
     precise

README.rst

@@ -1,7 +1,7 @@
 Yaksh
 =====
 
-|Build Status| |Documentation Status| |Version Status|
+|Build Status| |Documentation Status| |Version Status| |Coverage Status|
 
 To get an overview of the Yaksh interface please refer to the user documentation at `Yaksh Docs <http://yaksh.readthedocs.io>`_
 
@@ -163,4 +163,6 @@ Copyright (c) 2011-2017 `FOSSEE <https://fossee.in>`_
 .. |Documentation Status| image:: https://readthedocs.org/projects/yaksh/badge/?version=latest
    :target: http://yaksh.readthedocs.io/en/latest/?badge=latest
 .. |Version Status| image:: https://badge.fury.io/gh/fossee%2Fonline_test.svg
-    :target: https://badge.fury.io/gh/fossee%2Fonline_test
+    :target: https://badge.fury.io/gh/fossee%2Fonline_test
+.. |Coverage Status| image:: https://codecov.io/gh/fossee/online_test/branch/master/graph/badge.svg
+    :target: https://codecov.io/gh/fossee/online_test