Add test runner for Django projects (#1)

Add test runner for Django projects

Author: kazk

README.md

@@ -7,3 +7,8 @@ from codewars_unittest import CodewarsTestRunner
 
 unittest.main(testRunner=CodewarsTestRunner())
 ```
+
+```python
+# settings.py
+TEST_RUNNER = 'codewars_unittest.django.CodewarsDjangoRunner'
+```

codewars_unittest/django.py

@@ -0,0 +1,8 @@
+from __future__ import absolute_import
+from django.test.runner import DiscoverRunner
+from .test_runner import CodewarsTestRunner
+
+
+class CodewarsDjangoRunner(DiscoverRunner):
+    def run_suite(self, suite, **kwargs):
+        return CodewarsTestRunner().run(suite)