Adding the deployment to the extras library and updating the demo travis config.
Adding the deployment to the extras library and updating the demo travis config.

sjardine/gwtbootstrap3-demo,0x3333/gwtbootstrap3-demo,denis-vilyuzhanin/gwtbootstrap3-demo,gwtbootstrap3/gwtbootstrap3-demo,gwtbootstrap3/gwtbootstrap3-demo,crevete/gwtbootstrap3-demo,0x3333/gwtbootstrap3-demo,gwtbootstrap3/gwtbootstrap3-demo,sjardine/gwtbootstrap3-demo,0x3333/gwtbootstrap3-demo,crevete/gwtbootstrap3-demo,crevete/gwtbootstrap3-demo,sjardine/gwtbootstrap3-demo,denis-vilyuzhanin/gwtbootstrap3-demo,denis-vilyuzhanin/gwtbootstrap3-demo