add tox for test and coverage automation. Add development requirements.txt

.coveragerc

@@ -0,0 +1,7 @@
+[run]
+branch = True
+source = sanic, tests
+omit = site-packages
+
+[html]
+directory = coverage

.gitignore

@@ -1,3 +1,10 @@
+*~
+*.egg-info
+*.egg
+.coverage
+.coverage.*
+coverage
+.tox
 settings.py
 *.pyc
 .idea/*

requirements-dev.txt

@@ -0,0 +1,7 @@
+httptools
+ujson
+uvloop
+aiohttp
+pytest
+coverage
+tox

tox.ini

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+[tox]
+
+envlist = py35, report
+
+[testenv]
+
+deps =
+    aiohttp
+    pytest
+    # pytest-cov
+    coverage
+
+commands =
+    coverage run -m pytest tests {posargs}
+    mv .coverage .coverage.{envname}
+
+basepython:
+    py35: python3.5
+
+whitelist_externals =
+    coverage
+    mv
+    echo
+
+[testenv:report]
+
+commands =
+    coverage combine
+    coverage report
+    coverage html
+    echo "Open file://{toxinidir}/coverage/index.html"
+
+basepython =
+    python3.5