Master docs (strawlab#144)

*Create Sphinx docs(strawlab#126#126, v0.3 Release Task list)

*Separate Test Module(strawlab#126#126, v0.3 Release Task list)

*visual.Show() Methods default argument Replace binary string(strawlab#124)

*SegmentationNormal set_axis Function Implemented(strawlab#133)

Merge pull request strawlab#81 from larsmans/fixes

Fix bug in buffer protocol support