Add conda recipe

Merged David Hoese requested to merge feature-conda-recipe into develop

Adds a noarch conda recipe to the "goesr" package. Forces python 3.6 or greater given SIFT development strategy. Can be changed. Includes edits to the README for building and installing the conda package.

FYI the conda package for the develop branch (this branch) has been added to SIFT under the noarch platform. The instructions in the README should work.

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