Adds test for repo files

tests/test_repofiles.py

@@ -0,0 +1,38 @@
+from os import path
+try:
+    import unittest2 as unittest
+except ImportError:
+    import unittest
+
+
+class RepoFiles(unittest.TestCase):
+    FILES = [
+        ['./Dockerfile', './docker/Dockerfile'],
+        ['./docker-compose.yml', './docker/docker-compose.yml'],
+        ['./.env_sample'],
+        ['./.gitignore'],
+        ['./.travis.yml'],
+        ['./.codeclimate.yml'],
+        ['./CHANGELOG.md'],
+        ['./CODE_OF_CONDUCT.md'],
+        ['./CONTRIBUTING.md'],
+        ['./.github/ISSUE_TEMPLATE'],
+        ['./LICENSE.md', './LICENSE.txt'],
+        ['./.github/PULL_REQUEST_TEMPLATE'],
+        ['./README.md'],
+        ['./TROUBLESHOOTING.md'],
+        ['./USAGE.md'],
+        ['./USE_CASES.md']
+    ]
+
+    def _all_file(self, files):
+        '''
+        Checks the list of files and sees if they exist. If all of them don't
+        exist, returns False. Otherwise, return True.
+        '''
+        return all(map(lambda f: not path.isfile(f), files))
+
+    def test_file_existance(self):
+        missing = list(filter(self._all_file, self.FILES))
+        self.assertTrue(len(missing) == 0,
+                        "Files %s aren't found" % str(missing))