new section on raster, replaced dem_1km. tif with dem_90m.tif, gdaltools icons.
add gdaltools icons.
add new section raster
New dem_9m.tif replacing the dem_1km.tif including the color map
new section on raster resampling and format conversion
new section on raster resampling and format conversion
mior correction
Merge pull request #39 from maning/master

Two new sections on rasters and replacing the dem_1km data with dem_90m (SRTM)