Extend the contributor list.

Signed-off-by: Clement Escoffier <clement.escoffier@gmail.com>
Disable javadoc linter in java 8 (what a beautiful Java 8 feature...)

Signed-off-by: Clement Escoffier <clement.escoffier@gmail.com>
Extend the README file and documentation about the SBT_EXECUTABLE_NAME system property.

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