Basic sphinx documentation
Fix system path in conf.py
Define version in setup.py
Add requirements.txt file
Deleted unnecessary files.
Added requirements file.
Updated version of daq.py and function_reference.
Merge branch 'master' of https://github.com/armandovincelle/python-opendaq

Conflicts:
	requirements.txt
Updated versions of setup.py and README.md.
Merge pull request #1 from armandovincelle/master

Deleted unnecessary files. Updated some files.