Chat Service

$ go run main.go --profile=dev --service_address=localhost:8080

$ go run client/main.go --profile=dev

> micro chat new --user_ids=JohnBarry
{
	"chat_id": "3c9ea66c-d516-45d4-abe8-082089e18b27"
}

> micro chat send --chat_id=bed4f0f0-da12-46d2-90d2-17ae1714a214 --user_id=John --subject=Hello --text='Hey Barry'
{}

> micro chat history --chat_id=bed4f0f0-da12-46d2-90d2-17ae1714a214
{
	"messages": [
		{
			"id": "a61284a8-f471-4734-9192-640d89762e98",
			"client_id": "6ba0d2a6-96fa-47d8-8f6f-7f75b4cc8b3e",
			"chat_id": "bed4f0f0-da12-46d2-90d2-17ae1714a214",
			"user_id": "John",
			"subject": "Hello",
			"text": "Hey Barry"
		}
	]
}