Drop unmaintained Travis
Drop unmaintained Travis

k0kubun/github-ranking,k0kubun/github-ranking,k0kubun/github-ranking,k0kubun/githubranking,k0kubun/github-ranking,k0kubun/github-ranking,k0kubun/githubranking,k0kubun/githubranking,k0kubun/githubranking,k0kubun/githubranking