add Apache-2 lience shield to README.md
add Apache-2 lience shield to README.md

legdba/servicebox-jaxrs,legdba/servicebox,legdba/servicebox,legdba/servicebox-jaxrs,legdba/servicebox,legdba/servicebox,legdba/servicebox-jaxrs,legdba/servicebox-jaxrs,legdba/servicebox-jaxrs,legdba/servicebox