def audits
      json = client.get("/v1/sys/audit")
      json = json[:data] if json[:data]
      return Hash[*json.map do |k,v|
        [k.to_s.chomp("/").to_sym, Audit.decode(v)]
      end.flatten]
    end
def audits
      json = client.get("/v1/sys/audit")
      json = json[:data] if json[:data]
      return Hash[*json.map do |k,v|
        [k.to_s.chomp("/").to_sym, Audit.decode(v)]
      end.flatten]
    end
List all audits for the vault.

 @example
   Vault.sys.audits #=> { :file => #<Audit> }

 @return [Hash<Symbol, Audit>]