Added click and olefile to requirements.txt

[idiom]

Added the click and olefile packages to the requirements.txt for easy pip deployment during development.

[jbremer]

Thanks for that! I wasn't even aware there was still a requirements.txt in this repository, as the dependencies have long moved to setup.py (see also https://github.com/jbremer/sflock/blob/master/setup.py#L28-L30). That said, you can very easily deploy sflock by either running pip install -U sflock or, when developing, python setup.py develop. As such I see no other option then to close this PR and officially remove the requirements.txt from the repository.
If you have any other feedback and/or questions, please do let me know!

[coveralls]

Coverage remained the same at 92.807% when pulling 10ef8dd on idiom:master into 9713b64 on jbremer:master.