nipypecli should have --version

[yarikoptic]

Summary

$> nipypecli --version
Error: no such option: --version

Actual behavior

$> nipypecli --version
Error: no such option: --version

Expected behavior

$> nipypecli --version
0.13.1

How to replicate the behavior

$> nipypecli --version
Error: no such option: --version

Script/Workflow details

Please put URL to code or code here (if not too long).

http://www.onerussian.com/tmp/nipypecli

Platform details:

Please paste the output of: python -c "import nipype; print(nipype.get_info()); print(nipype.__version__)"

$> python -c "import nipype; print(nipype.get_info()); print(nipype.__version__)" 
{'nibabel_version': '2.1.0', 'sys_executable': '/usr/bin/python', 'networkx_version': '1.11', 'numpy_version': '1.12.0', 'sys_platform': 'linux2', 'sys_version': '2.7.13 (default, Jan 19 2017, 14:48:08) \n[GCC 6.3.0 20170118]', 'commit_source': u'archive substitution', 'commit_hash': u'8946bcab9d0e2f24e5364e42d4a7766e00237cb8', 'pkg_path': '/usr/lib/python2.7/dist-packages/nipype', 'nipype_version': u'0.13.1', 'traits_version': '4.6.0', 'scipy_version': '0.18.1'}
0.13.1