Added section for Environment and Preferences Setup on the ISIS3 Documentation Page. Fixes #5263#663

Merged

jessemapel merged 1 commit intoDOI-USGS:devfrom kaitlyndlee:m05263

Dec 19, 2018

+18-8

Commits on Apr 4, 2018

Added section for Environment and PreferemcesSetup in the Getting Started Section.
kaitlyndlee
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