Improve travis file
Improve travis file

mainly add sudo false, which should speed up the jobs

estolfo/mongoid,mongoid/mongoid,zenjoy/mongoid,wuboy0307/mongoid,drobune/mongoid,Sharevari-Inc/mongoid,bjori/mongoid,Zhomart/mongoid,narutosanjiv/mongoid,mongodb/mongoid,uniiverse/mongoid,herimedia/mongoid,Sharevari-Inc/mongoid,sivagollapalli/mongoid,simi/mongoid,simi/mongoid,rinmu/mongoid,Zhomart/mongoid,kay-kim/mongoid,tzar/mongoid,cao7113/mongoid,arnkorty/mongoid,jbrien/mongoid,mysociety/mongoid,karmakaze/mongoid,amw/mongoid,sideci-sample/sideci-sample-mongoid,kayakyakr/mongoid,glebtv/mongoid,drobune/mongoid,kayakyakr/mongoid,bencrouse/mongoid,mysociety/mongoid,cao7113/mongoid,kcdragon/mongoid,herimedia/mongoid,zaithottakath/mongoid,joshsoftware/mongoid,zBMNForks/mongoid,codedogfish/mongoid,karmakaze/mongoid,zaithottakath/mongoid,rinmu/mongoid,arnkorty/mongoid,kcdragon/mongoid,estolfo/mongoid,zenjoy/mongoid,wuboy0307/mongoid,jbrien/mongoid,Azzurrio/mongoid,rpocklin/mongoid,bjori/mongoid,glebtv/mongoid,narutosanjiv/mongoid,uniiverse/mongoid,amw/mongoid,nicolasblanco/mongoid,kay-kim/mongoid,joshsoftware/mongoid,mongoid/mongoid,mongodb/mongoid,zBMNForks/mongoid,sivagollapalli/mongoid,jonhyman/mongoid,nviennot/mongoid,tzar/mongoid,Welovroi/mongoid,nviennot/mongoid,codedogfish/mongoid,rpocklin/mongoid,jonhyman/mongoid,Azzurrio/mongoid,Welovroi/mongoid,bencrouse/mongoid,sideci-sample/sideci-sample-mongoid,mongodb/mongoid