手动安装gem
http://raflabs.com/blogs/silence-is-foo/2010/07/19/installing-a-gem-fork-from-github-source/
http://stackoverflow.com/questions/2577346/how-to-install-gem-from-github-source
up vote 4 down vote accepted
well, that depends on the project in question. Some projects have a *.gemspec file in their root directory. In that case, it would be
gem build GEMNAME.gemspec gem install gemname-version.gem
声明：本文来自网络，不代表【好得很程序员自学网】立场，转载请注明出处：http://www.haodehen.cn/did43347