travis-ci/README.md: add a note about how the app is assembled
travis-ci/README.md: add a note about how the app is assembled

toabctl/crowbar,aspiers/crowbar,crowbar/crowbar,aplanas/crowbar,dirkmueller/crowbar,toabctl/crowbar,rhafer/crowbar,rsalevsky/crowbar,dirkmueller/crowbar,vwallfahrer/crowbar,mmnelemane/crowbar,crowbar/crowbar,mmnelemane/crowbar,nkrinner/crowbar,aplanas/crowbar,aspiers/crowbar,SUSE-Cloud/crowbar,tserong/crowbar,vwallfahrer/crowbar,rhafer/crowbar,MaximilianMeister/crowbar,nkrinner/crowbar,rsalevsky/crowbar,SUSE-Cloud/crowbar,MaximilianMeister/crowbar,rhafer/crowbar,tserong/crowbar