Update sample usage of writer class

[Nfargette]

Hello,
The sample usage at the end of the writer class seem outdated. (https://cdflib.readthedocs.io/en/latest/modules/cdfwrite.html)
The first error is for

info=cdf_master.cdf_info()
cdf_file=cdfwrite.CDF('/path/to/swea_file.cdf',cdf_spec=info,delete=True)

, where cdf_spec expects a dictionnary but info is not one

then the line
globalaAttrs=cdf_master.globalattsget(expand=True) yields TypeError: CDF.globalattsget() got an unexpected keyword argument 'expand'
and the following line
cdf_file.write_globalattrs(globalaAttrs) yields the following error :

in CDF.write_globalattrs(self, globalAttrs)
entryNumMaX = -1
poffset = -1
for entryNum, value in entry.items():
   if entryNumMaX < entryNum:
     entryNumMaX = entryNum
AttributeError: 'list' object has no attribute 'items'

Would it be possible to update the documentation for the latest version of the cdflib package ? Thank you !

[bryan-harter]

Thanks for that! Yes the docs are a bit out of date, we'll have to go through and rework it