update ci configs

Author: jintwo

.coveragerc

@@ -0,0 +1,2 @@
+[run]
+omit = tests/*

.travis.yml

@@ -1,12 +1,5 @@
 language: python
 python:
   - "2.7"
-# command to install dependencies
-install:
-  - pip install .
-  - pip install coveralls
-# command to run tests
-script:
-  coverage run --omit=*/tests/* --source=simplepeg setup.py test
-after_success:
-  coveralls
+install: pip install tox-travis
+script: tox

tox.ini

@@ -1,7 +1,11 @@
 [tox]
 envlist=py27
+
 [testenv]
 changedir=tests
-deps=pytest
-commands=py.test --basetemp={envtmpdir}
+deps=
+    pytest
+    pytest-cov
+    coveralls
+commands=py.test --basetemp={envtmpdir} --cov-config .coveragerc --cov=simplepeg
 setenv = PYTHONPATH = {toxinidir}