Basic test infrastructure:

1. Stubs for some tests
2. tox.ini file with environments list

tests/test_plugin.py

@@ -0,0 +1,12 @@
+import unittest
+
+
+class TimerPlugin(unittest.TestCase):
+    def test_addOptions(self):
+        self.fail()
+
+    def test_format_report(self):
+        self.fail()
+
+    def test_timeTaken(self):
+        self.fail()

tox.ini

@@ -0,0 +1,9 @@
+[tox]
+envlist = py33,py32,py31,py27,py26,py25,py24
+
+[testenv]
+deps =
+    nose
+    mock
+commands =
+    nosetests