Initializes "settings" in the constructor so that each inherited socket will get it's own "settings" object upon calling "Socket.call(...)".
Initializes "settings" in the constructor so that each inherited socket will get it's own "settings" object upon calling "Socket.call(...)".

Fixes #24.

DavidCai1993/axon,DavidCai1993/axon,Unitech/axon,tj/axon,Unitech/pm2-axon,tj/axon,Unitech/axon,Unitech/pm2-axon