add minimal tests

.coveragerc

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+[report]
+include =
+  fidetournament/*
+omit =
+  tests/*

.travis.yml

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+# Config file for automatic testing at travis-ci.org
+
+language: python
+python:
+  - 3.6
+  - 3.5
+  - 3.4
+  - 2.7
+
+# Command to install dependencies, e.g. pip install -r requirements.txt --use-mirrors
+install:
+  - pip install -U tox-travis
+  - pip install -U coveralls
+
+# Command to run tests, e.g. python setup.py test
+script:
+  - tox
+  - coverage run setup.py test
+  - coverage report -m
+
+after_success:
+  - coveralls

tests/tests.py

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+from fidetournament.tournament import Tournament
+
+import os
+import unittest
+
+class TestTournament(unittest.TestCase):
+
+    def build_path_to_file(self, filepath):
+        return os.path.join(os.path.dirname(os.path.realpath(__file__)), filepath)
+
+    def test_parse(self):
+        t = Tournament()
+        t.parse(self.build_path_to_file('test_demo.trf'))
+        self.assertNotEqual(len(t.players), 0)

tox.ini

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+[tox]
+envlist = py27, py34, py35, py36, flake8
+
+[travis]
+python =
+    3.6: py36
+    3.5: py35
+    3.4: py34
+    2.7: py27
+
+[testenv:flake8]
+basepython = python
+deps = flake8
+commands = flake8 fidetournament
+
+[testenv]
+setenv =
+    PYTHONPATH = {toxinidir}
+
+commands = python setup.py test