[EventLoop] Install libevent onto the travis worker
[EventLoop] Install libevent onto the travis worker

FireWalkerX/react,ericariyanto/react,reactphp/react,sachintaware/react,ympons/react,sachintaware/react,dagopoot/react,dagopoot/react,cystbear/react,ympons/react,krageon/react,ericariyanto/react,naroga/react,nemurici/react,krageon/react,FireWalkerX/react,nemurici/react,naroga/react,cesarmarinhorj/react,cystbear/react,cesarmarinhorj/react