Add bower install to travis install.
Add bower install to travis install.

haveal/gorgias-chrome,Yann-Pravo/gorgias-chrome,Yann-Pravo/gorgias-chrome,haveal/gorgias-chrome,gorgias/gorgias-chrome,haveal/gorgias-chrome,Yann-Pravo/gorgias-chrome,gorgias/gorgias-chrome,gorgias/gorgias-chrome