Update CLI doc.
Update CLI doc.

perrygeo/rasterio,johanvdw/rasterio,kapadia/rasterio,njwilson23/rasterio,brendan-ward/rasterio,johanvdw/rasterio,njwilson23/rasterio,clembou/rasterio,perrygeo/rasterio,kapadia/rasterio,kapadia/rasterio,brendan-ward/rasterio,njwilson23/rasterio,youngpm/rasterio,johanvdw/rasterio,clembou/rasterio,brendan-ward/rasterio,youngpm/rasterio,perrygeo/rasterio,youngpm/rasterio,clembou/rasterio