we no longer need nginx to be installed in travis.yml
we no longer need nginx to be installed in travis.yml

nathandunn/jbrowse,GMOD/jbrowse,GMOD/jbrowse,nathandunn/jbrowse,GMOD/jbrowse,nathandunn/jbrowse,nathandunn/jbrowse,nathandunn/jbrowse,GMOD/jbrowse,GMOD/jbrowse