Travis CI was enabled

.gitignore

@@ -59,3 +59,4 @@ target/
 
 # Virtualenv
 env/
+.python-version

.travis.yaml

@@ -0,0 +1,5 @@
+language: python
+python:
+  - "3.6"
+script:
+  - python tests.py

tests.py

@@ -1,4 +1,4 @@
-from unittest import TestCase, main
+from unittest import TestCase
 
 from sms_counter import SMSCounter
 
@@ -54,4 +54,5 @@ class SMSCounterTestCase(TestCase):
 
 
 if __name__ == '__main__':
-    main()
+    import unittest
+    unittest.main()