nrf51288-DK BLE peripheral security

Just thinking about the structure more, I think it is better to have something like that:

NRF.setServices({
  0xBCDE : {
    0xABCD : {
      value : "Hello", 
      readable: true,
      writable : true,
      security: {
        read: {
          encrypted: false,
          mitm: false,
          lesc: false,
          signed: false
        },
        write: {
          encrypted: true,
          mitm: false,
          lesc: false,
          signed: false
        }
      }
    }
  }
});

Here is my branch it is still in wip and untested.