Added examples of working with IP cameras

Signed-off-by: Laex <laex@bk.ru>
Added sample - two cameras

Signed-off-by: Laex <laex@bk.ru>
Added augmented reality example

Signed-off-by: Laex <laex@bk.ru>
Fixed readme

Signed-off-by: Laex <laex@bk.ru>
Update README.md
Augmented reality example - fixed memory leak

Signed-off-by: Laex <laex@bk.ru>