Merge pull request #1529 from Unidata/logo

Enhance logo display for dark and light themes

Author: lesserwhirls

README.md

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 # netCDF-Java/CDM
 
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 The netCDF Java library provides an interface for scientific data access.
 It can be used to read scientific data from a variety of file formats including netCDF, HDF, GRIB, BUFR, and many others.
 By itself, the netCDF-Java library can only write netCDF-3 files.
 It can write netCDF-4 files by using JNI to call the netCDF-C library.
 It also implements Unidata's Common Data Model (CDM) to provide data geolocation capabilities.
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 For more information about netCDF-Java/CDM, see the netCDF-Java web page at