Implement str protocol for human readable datetime printing

maya.py

@@ -46,6 +46,9 @@ class MayaDT(object):
     def __repr__(self):
         return '<MayaDT epoch={}>'.format(self._epoch)
 
+    def __str__(self):
+        return self.rfc2822()
+
     def __format__(self, *args, **kwargs):
         """Return's the datetime's format"""
         return format(self.datetime(), *args, **kwargs)

test_maya.py

@@ -64,7 +64,9 @@ def test_print_date(capsys):
 
     print(d)
     out, err = capsys.readouterr()
-    assert out == '<MayaDT epoch=1321488000.0>\n'
+
+    assert out == 'Thu, 17 Nov 2011 00:00:00 GMT\n'
+    assert repr(d) == '<MayaDT epoch=1321488000.0>'
 
 
 def test_invalid_date():