Updated travis to cover python 3.6-3.8 and integrated with coveralls.

.travis.yml

@@ -1,11 +1,15 @@
 language: python
 python:
   - "3.6"
-  - "3.7-dev"  # 3.7 development branch
+  - "3.7"
+  - "3.8"
 # command to install dependencies
 install:
   - pip install -r requirements.txt
+  - pip install -r requirements-testing.txt
   - pip install -e .
 # command to run tests
 script:
-  - pytest
+  - pytest --cov=dungeonsheets tests/
+after_success:
+  - coveralls

README.rst

@@ -6,6 +6,11 @@ A tool to create character sheets for Dungeons and Dragons.
 
 .. image:: https://travis-ci.com/canismarko/dungeon-sheets.svg?branch=master
    :target: https://travis-ci.com/canismarko/dungeon-sheets
+   :alt: Build status
+
+.. image:: https://coveralls.io/repos/github/canismarko/dungeon-sheets/badge.svg
+   :target: https://coveralls.io/github/canismarko/dungeon-sheets
+   :alt: Test coverage status
 
 .. image:: https://readthedocs.org/projects/dungeon-sheets/badge/?version=latest
    :target: https://dungeon-sheets.readthedocs.io/en/latest/?badge=latest

requirements-tests.txt

@@ -0,0 +1,2 @@
+pytest
+pytest-cov

requirements.txt

@@ -2,6 +2,5 @@ certifi>=2018.1.18
 fdfgen>=0.16
 npyscreen
 jinja2
-pytest
 sphinx
 pdfrw