Added Ripple effect source code

Signed-off-by: Andre Luiz Viana Loureiro <andre.vl@samsung.com>
Ripple effect running on SRA's webcl implementation

Signed-off-by: Andre Luiz Viana Loureiro <andre.vl@samsung.com>
Updated demo.txt

Signed-off-by: Andre Luiz Viana Loureiro <andre.vl@samsung.com>
Fixing some code style

Signed-off-by: Andre Luiz Viana Loureiro <andre.vl@samsung.com>