Update travis config and add code coverage

Author: miglen

.gitignore

@@ -99,3 +99,5 @@ ENV/
 
 # mypy
 .mypy_cache/
+
+.DS_Store

.travis.yml

@@ -13,7 +13,10 @@ deploy:
 notifications:
   email: false
 install:
-  - pip install pep8 .
+  - pip install -r test/requirements.txt
+  - pip install .
 script: 
   - pep8
-  - pytest
+  - pytest --cov=./egn/
+after_success:
+  - codecov

README.rst

@@ -6,10 +6,18 @@ numbers in Bulgaria EGN (ЕГН).
 
 Български: Скрипт за проверка и генериране на ЕГН / Програма за проверка и генериране на единни граждански номера.
 
-|Build Status|
-
-.. |Build Status| image:: https://travis-ci.org/miglen/egn.svg?branch=master
-   :target: https://travis-ci.org/miglen/egn
+.. image:: https://badge.fury.io/py/egn.svg
+   :target: pypi.python.org/pypi/egn
+   :alt: PyPI package
+.. image:: https://img.shields.io/travis/miglen/egn.svg
+  :target: https://travis-ci.org/miglen/egn
+.. image:: https://readthedocs.org/projects/egn/badge/?version=latest
+  :target: http://egn.readthedocs.io/en/latest/?badge=latest
+  :alt: Documentation Status
+.. image:: https://img.shields.io/codecov/c/github/miglen/egn.svg
+  :target: http://codecov.io/gh/miglen/egn
+.. image:: https://img.shields.io/codeclimate/github/miglen/egn.svg
+  :target: https://codeclimate.com/github/miglen/egn
 
 to-do
 =====

test/requirements.txt

@@ -0,0 +1,5 @@
+codecov
+coverage
+pep8
+pytest
+pytest-cov

tox.ini

@@ -0,0 +1,4 @@
+[testenv]
+passenv = TOXENV CI TRAVIS TRAVIS_*
+deps = codecov>=1.4.0
+commands = codecov -e TOXENV