Inconsistencies GUI/CLI defaults and black auto-formatter

• Thanks to gdevenyi for raising issues regarding the flags inconsistencies between the GUI and CLI. See #58 and #59 .
• Black auto-formatter introduced.

Patch - nose to pytest - new orientation options

• Integrate offset_correction.
• added sample upside down option
• integrated frame body as frame head
• abandoned nose testing for pytest
• add radio button for sample_upside_down
• new folder structure cli and gui
• bug fixed issues #41 with latest release

Patch - bugs fixed

Following issues #34 and #35: few bugs fixed to work in the windows environment.

Patch-release, GUI upgraded, Python 3 and 2.7 back compatibility, Travis CI

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• Python 3 and back compatible with Python 2.7
• Travis-CI for continuous integration
• Help reference in the Graphical User Interface, and upgraded GUI
• Coverage testing - in progress - 71%
• BUGS corrected from the previous version (v1.0.0): removed blind parameter -axis_direction in the parser parameters list. Removed wrong parameter update in the parser bruker2nifti.

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First *pip installable* release -python 2.7

• Python 2.7 only
• Released on pypi (wheels)
• Graphical user interface and GUI launcher creator
• Command line utilities
• Nosetests coverage 65%