update README on using the utilities

[visr]

Fixes #86

[yeesian]

Looks great!

[yeesian]

I think one of the examples you gave on Zulip:

GDAL.ogr2ogr_path() do ogr2ogr
    run(`$ogr2ogr -f "ESRI Shapefile" outputfile.dbf inputfile.csv`)
end

was also super helpful for others:

Jordan Cluts
Oh my goodness I didn't even notice the first line where you get the ogr path. That is incredibly slick I've never seen someone do that! 

[visr]

Ah yes, thanks, I will add that example as well.

Do you think it would be useful to copy some of this documentation to https://yeesian.com/ArchGDAL.jl/dev/reference/#API-Utilities as well? Some of this is also available through libgdal, though sometimes these are just more convenient.

[yeesian]

Do you think it would be useful to copy some of this documentation to https://yeesian.com/ArchGDAL.jl/dev/reference/#API-Utilities as well?

Yeah, I think so! I've been trying to think through end-to-end workflows more, and these are great

[yeesian]

I've been trying to think through end-to-end workflows more, and these are great

In particular, in combination with yeesian/ArchGDAL.jl#201 to set up wizards for introducing people to the different utilities. (It might also be good in a separate package, just wanted to create ideas for the different directions in which this can be taken.)