cleaned up travis config
cleaned up travis config

renaatdemuynck/assetic,matthiasmullie/assetic,Sgoettschkes/assetic,kriswallsmith/assetic,mubassirhayat/assetic,lenar/assetic,lellimecnar/assetic,shandy05/assetic,renaatdemuynck/assetic,shandy05/assetic,kriswallsmith/assetic,shandy05/assetic,Sgoettschkes/assetic,shandy05/assetic,webmozart/assetic,matthiasmullie/assetic,renaatdemuynck/assetic,lenar/assetic,kriswallsmith/assetic,fredemmott/assetic,lenar/assetic,webmozart/assetic,fredemmott/assetic,matthiasmullie/assetic,fredemmott/assetic,sportradar/assetic,lellimecnar/assetic,webmozart/assetic,lellimecnar/assetic,renaatdemuynck/assetic,lellimecnar/assetic,sportradar/assetic,lenar/assetic,kriswallsmith/assetic,sportradar/assetic,mubassirhayat/assetic,mubassirhayat/assetic,Sgoettschkes/assetic,matthiasmullie/assetic,Sgoettschkes/assetic