Fix RFC822 filters + More tests (#257)

* Make rfc822 filters compatible with Windows systems.

.strftime() is relative to the system it's being run on.
UNIX has '%s' for seconds since the EPOCH, Windows doesn't (ValueError).
Solution: use .timestamp() to achieve the same result on both platforms.
This also allows us to drop the float() around it, since it returns a float.

* Start testing filters

* Add placeholders for more tests

* Make 'tests' folder a Python package

Now you can run tests with just `pytest tests`

* Update readme and travis config

* Test timesince()

* Update and organize .gitignore

Deleted: (nothing)
Added: Coverage files, .idea\

* Test filter_truthy, category_name

* Tests for backend.py

* Tests for bencode.py

* Move (empty) test_models.py to tests package

* Tests for utils.py

* Fixes for flattenDict

* Change name to `flatten_dict`
* `newkey` was assigned but never used

* Add a helper class for testing

* Show coverage on Travis

(only Travis for now...)

* Remove IDE

* Use correct assert functions

* Update README.md

tests/test_api_handler.py

@@ -0,0 +1,34 @@
+import unittest
+import json
+
+from nyaa import api_handler, models
+from tests import NyaaTestCase
+from pprint import pprint
+
+
+class ApiHandlerTests(NyaaTestCase):
+
+    # @classmethod
+    # def setUpClass(cls):
+    #     super(ApiHandlerTests, cls).setUpClass()
+
+    # @classmethod
+    # def tearDownClass(cls):
+    #     super(ApiHandlerTests, cls).tearDownClass()
+
+    def test_no_authorization(self):
+        """ Test that API is locked unless you're logged in """
+        rv = self.app.get('/api/info/1')
+        data = json.loads(rv.get_data())
+        self.assertDictEqual({'errors': ['Bad authorization']}, data)
+
+    @unittest.skip('Not yet implemented')
+    def test_bad_credentials(self):
+        """ Test that API is locked unless you're logged in """
+        rv = self.app.get('/api/info/1')
+        data = json.loads(rv.get_data())
+        self.assertDictEqual({'errors': ['Bad authorization']}, data)
+
+
+if __name__ == '__main__':
+    unittest.main()