test_generate.py is failing

[twiecki]

Not sure when this happened but I think @isofer rewrote the add_noise but didn't change the unittests.

>>nosetests test_generate.py
E..EE.
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ERROR: test_add_noise (kabuki.tests.test_generate.TestGenerate)
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Traceback (most recent call last):
  File "/home/wiecki/working/projects/kabuki/kabuki/tests/test_generate.py", line 17, in test_add_noise
    new_params = _add_noise(params, noise=noise)
  File "/home/wiecki/working/projects/kabuki/kabuki/generate.py", line 70, in _add_noise
    for param, value in cond_params.iteritems():
AttributeError: 'int' object has no attribute 'iteritems'

======================================================================
ERROR: test_single_cond_multi_subjs (kabuki.tests.test_generate.TestGenerate)
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Traceback (most recent call last):
  File "/home/wiecki/working/projects/kabuki/kabuki/tests/test_generate.py", line 72, in test_single_cond_multi_subjs
    new_params = _add_noise(params)
  File "/home/wiecki/working/projects/kabuki/kabuki/generate.py", line 70, in _add_noise
    for param, value in cond_params.iteritems():
AttributeError: 'int' object has no attribute 'iteritems'

======================================================================
ERROR: test_single_cond_multi_subjs_exclude (kabuki.tests.test_generate.TestGenerate)
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Traceback (most recent call last):
  File "/home/wiecki/working/projects/kabuki/kabuki/tests/test_generate.py", line 97, in test_single_cond_multi_subjs_exclude
    new_params = _add_noise(params, exclude_params=('tau',))
  File "/home/wiecki/working/projects/kabuki/kabuki/generate.py", line 70, in _add_noise
    for param, value in cond_params.iteritems():
AttributeError: 'int' object has no attribute 'iteritems'

----------------------------------------------------------------------
Ran 6 tests in 0.105s

FAILED (errors=3)