MkDocs, Readme, Files API, Automated session saving, v2.0.1

MkDocs: sphinx docstrings rewritten to google, improved config, written the major part of how-to.
Readme: centered title + logo, added badges, features list, updated changelog.

Improved Files API, added automatical session saving and restoring to Client.
Some changes in makefile and gitignore.
License Notice now refers to all contributors.

tests/test_js.py

@@ -68,3 +68,7 @@ class TestJs2Py(unittest.TestCase):
             ctx = atjsparse.exec_js(f)
             res = ctx.window['AJAX_TOKEN']
             self.assertEqual(res, self.results[i])
+
+
+if __name__ == '__main__':
+    unittest.main()

tests/test_login.py

@@ -26,5 +26,14 @@ class TestLogin(unittest.TestCase):
         at = Client.from_hashed(
             AUTH_USER, AUTH_MD5
         )
-        srvs = len(at.list_servers())
+
+        srvs = len(
+            at.list_servers(
+                cache=False
+            )
+        )
         self.assertTrue(srvs > 0)
+
+
+if __name__ == '__main__':
+    unittest.main()