Revert "Temporarily remove travis.yml"
Revert "Temporarily remove travis.yml"

This reverts commit 6d936943f682bb1dc68ccac2bbf5b2c8cec74695.

cgvarela/passenger,phusion/passenger,antek-drzewiecki/passenger,antek-drzewiecki/passenger,kewaunited/passenger,kewaunited/passenger,kewaunited/passenger,clemensg/passenger,clemensg/passenger,kewaunited/passenger,phusion/passenger,antek-drzewiecki/passenger,antek-drzewiecki/passenger,cgvarela/passenger,cgvarela/passenger,antek-drzewiecki/passenger,cgvarela/passenger,kewaunited/passenger,cgvarela/passenger,kewaunited/passenger,cgvarela/passenger,kewaunited/passenger,cgvarela/passenger,clemensg/passenger,antek-drzewiecki/passenger,clemensg/passenger,clemensg/passenger,phusion/passenger,cgvarela/passenger,clemensg/passenger,phusion/passenger,antek-drzewiecki/passenger,clemensg/passenger,kewaunited/passenger,clemensg/passenger,phusion/passenger,phusion/passenger,antek-drzewiecki/passenger,phusion/passenger,phusion/passenger