test.sh shows couple of failures on OSX 10.10.1
Not sure if this is reproducible by others in their enviroment/platform but here is what I am seeing on my machine.

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FAIL: test_now (pandas.tseries.tests.test_tslib.TestTimestamp)
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Traceback (most recent call last):
  File "/Users/tvyomkesh/pandas/pandas/tseries/tests/test_tslib.py", line 343, in test_now
    self.assertTrue((ts_from_string_tz.tz_localize(None) - ts_from_string) < delta)
AssertionError: False is not true

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FAIL: test_today (pandas.tseries.tests.test_tslib.TestTimestamp)
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Traceback (most recent call last):
  File "/Users/tvyomkesh/pandas/pandas/tseries/tests/test_tslib.py", line 359, in test_today
    self.assertTrue((ts_from_string_tz.tz_localize(None) - ts_from_string) < delta)
AssertionError: False is not true

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Ran 7309 tests in 500.577s
FAILED (SKIP=468, failures=2)
