Unify into build.gradle

Signed-off-by: Francis Galiegue <fgaliegue@gmail.com>
0.8.1

Signed-off-by: Francis Galiegue <fgaliegue@gmail.com>
Update version

Signed-off-by: Francis Galiegue <fgaliegue@gmail.com>
Update json-schema-validator version

Signed-off-by: Francis Galiegue <fgaliegue@gmail.com>