Instruct Travis CI to install composer dependencies
Instruct Travis CI to install composer dependencies

dopesong/Slim,jaapverloop/Slim,Sam-Burns/Slim,foxyantho/Slim,somjit2514/basic,juliangut/Slim,samsonasik/Slim,iinux/Slim,pine3ree/Slim,iinux/Slim,opengeek/Slim,JoeBengalen/Slim,iinux/Slim,designermonkey/Slim,feryardiant/slim,mnapoli/Slim,RealSelf/Slim,slimphp/Slim,akrabat/Slim,AndrewCarterUK/Slim