Added where clause example.

Signed-off-by: Timo Kinnunen <timo.kinnunen@gmail.com>
Implemented RGB and HSB pixel streams for color adjustment.

Signed-off-by: Timo Kinnunen <timo.kinnunen@gmail.com>
Added examples of color manipulation with RGB and HSB streams.

Signed-off-by: Timo Kinnunen <timo.kinnunen@gmail.com>
Updated readme with latest changes.

Signed-off-by: Timo Kinnunen <timo.kinnunen@gmail.com>