Add "secrets" command documentation
Add "secrets" command documentation

joelthompson/vault,naunga/vault,quixoten/vault,hashicorp/vault,joelthompson/vault,kingland/vault,joelthompson/vault,joelthompson/vault,quixoten/vault,mgk/vault,hashicorp/vault,hartsock/vault,kingland/vault,Aloomaio/vault,quixoten/vault,hartsock/vault,rnaveiras/vault,rnaveiras/vault,mgk/vault,hartsock/vault,Aloomaio/vault,Aloomaio/vault,hashicorp/vault,quixoten/vault,hartsock/vault,naunga/vault,hashicorp/vault,rnaveiras/vault,kingland/vault,Aloomaio/vault,hashicorp/vault,hashicorp/vault,mgk/vault,rnaveiras/vault,kingland/vault,hartsock/vault,mgk/vault,rnaveiras/vault,kingland/vault