Add some basic test ad example

Author: shurph

tests/__init__.py

@@ -0,0 +1,8 @@
+from click.testing import CliRunner
+from gitconsensus.gitconsensus import cli
+
+def test_cli_command():
+    runner = CliRunner()
+    result = runner.invoke(cli, ["get-repository"])
+    assert result.exit_code == 2
+