Use San Francisco font on El Capitan Beta
Use San Francisco font on El Capitan Beta

See https://github.com/atom/atom/pull/8612
torx-io/torx-dark-ui,torx-io/torx-dark-ui,torx-io/torx-dark-ui,torx-io/torx-dark-ui,torx-io/torx-dark-ui,torx-io/torx-dark-ui,Zeioth/atom-visual-studio-code-ui,torx-io/torx-dark-ui