fixed typos, combined paragraphs to single line, added code markdown for referenced classes/interfaces.
updated final paragraph and combined into single paragraph under Sample Design
updated .gitignore
added LocalRasterData.iml, added LocalRasterData to module listing
added how to use section
added steps to add raster data
removed class description section
added renderer section
added app screenshot
removed local raster file on start
formatted source
set the extent when adding raster files as operational layers
change app name