Make it configurable

[ninjamarcus]

No description provided.

[Syleron]

This can be a little more DRY by using the following notation:

`

var (
    // Time allowed to write a message to the peer.
    writeWait = 10 * time.Second

    // Time allowed to read the next pong message from the peer.
    pongWait = 60 * time.Second

    // Send pings to peer with this period. Must be less than pongWait.
    pingPeriod = (pongWait * 9) / 10

    // Maximum message size allowed from peer.
    maxMessageSize = 2560
)

`