Change the scope of the slf4j binding - would avoid being copied in 'application'

Signed-off-by: Clement Escoffier <clement.escoffier@gmail.com>
New demo page.

Signed-off-by: Clement Escoffier <clement.escoffier@gmail.com>
Add slf4j dependency to projects

Signed-off-by: Clement Escoffier <clement.escoffier@gmail.com>
Fix #88

To not check the files contained in the libs directory

Signed-off-by: Clement Escoffier <clement.escoffier@gmail.com>