Removed io.js and node 4 from travis file since Firepad (new dependency for syncing editor with firebase) does not support them.
Removed io.js and node 4 from travis file since Firepad (new dependency for syncing editor with firebase) does not support them.

KyperTech/matter-client,KyperTech/grout,KyperTech/grout,KyperTech/matter-client