feat(README): add travis badge
feat(README): add travis badge

krallistic/charts,oleh-ozimok/charts,mluedke/charts,grugnog/charts,krallistic/charts,pfeodrippe/charts,caiwenhao/charts,pfeodrippe/charts,ledor473/charts,grugnog/charts,smelchior/charts,escardin/charts,cafebazaar/charts,rimusz/helm-charts,mluedke/charts,smileisak/charts,jainishshah17/charts,lachie83/charts,smileisak/charts,barklyprotects/charts,eicnix/charts,mlaccetti/charts,samisms/charts,eicnix/charts,escardin/charts,ledor473/charts,oleh-ozimok/charts,DevOpsify/charts,kachkaev/charts,rimusz/helm-charts,trobert2/charts-1,GaneshSPatil/charts,plytro/charts,lachie83/charts,plytro/charts,jainishshah17/charts,smileisak/charts,viglesiasce/charts,barklyprotects/charts,helm/charts,samisms/charts,lachie83/charts,rimusz/helm-charts,eicnix/charts,pfeodrippe/charts,DevOpsify/charts,oleh-ozimok/charts,viglesiasce/charts,sd2k/charts,grugnog/charts,samisms/charts,pfeodrippe/charts,smelchior/charts,escardin/charts,helm/charts,caiwenhao/charts,GaneshSPatil/charts,smelchior/charts,sd2k/charts,mlaccetti/charts,helm/charts,sd2k/charts,caiwenhao/charts,mluedke/charts,GaneshSPatil/charts,trobert2/charts-1,sstarcher/charts,GaneshSPatil/charts,sstarcher/charts,trobert2/charts-1,sd2k/charts,barklyprotects/charts,DevOpsify/charts,DevOpsify/charts,ledor473/charts,rimusz/helm-charts,kachkaev/charts,krallistic/charts,mehdy/charts,jainishshah17/charts,sstarcher/charts,lachie83/charts,mlaccetti/charts,helm/charts,kachkaev/charts,viglesiasce/charts