First working version of raster loader relying on gdal bindings
Transformed parser into class and got tiling implemented

Still needs padding for the raster edges (gdal raster driver expects single tile size for mode=2 rasters)
Added padding to raster tiles

The parse log writing is split into a separate function, updated readme and added settings for tilesize and disabling padding
Added python-gdal install to travis.yml
Debugging python-gdal install in travis build
Debugging python-gdal install in travis build
Merge pull request #2 from geodesign/gdalraster

Using GDAL bindings for raster parsing.