Updated documentation, descriptions for v1.0 release.

scripts/NCEP NARR Data analysis/ReadMe.txt

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+NARR data provided by the NOAA/OAR/ESRL PSL, Boulder, Colorado, USA, from their Web
+site at https://psl.noaa.gov/
+
+The original "air.201806.nc" datafile was downloaded from 
+https://psl.noaa.gov/data/gridded/data.narr.pressure.html
+
+Specific download link (~650 MB):
+ftp://ftp.cdc.noaa.gov/Datasets/NARR/pressure/air.201806.nc [Last accessed on 
+2020-06-17]
+
+
+The following files are a direct slice of this data:
+- export_dist.txt
+- export_heights.txt
+- export_press_atmosphere.txt
+- export_temp_atmosphere.txt
+
+
+This data file was not included here, because it has a very niche use for the
+AstroAtmosphere package and is a large file. The tradeoff seems to me to not very
+favourable, and therefore it is omitted.