Imports of simple-consumer command

PathSynopsis
flagPackage flag implements command-line flag parsing.
fmtPackage fmt implements formatted I/O with functions analogous to C's printf and scanf.
github.com/streadway/amqpPackage amqp is an AMQP 0.9.1 client with RabbitMQ extensions
logPackage log implements a simple logging package.
timePackage time provides functionality for measuring and displaying time.