Gollum is "A simple, Git-powered wiki with a sweet API and local frontend." It's hosted on GitHub: http://github.com/github/gollum
Deploying my site to EngineYard is generating this error.
Fetching gem metadata from https://rubygems.org/ Installing charlock_holmes (0.6.9.4) Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native extension.
It seems to be an issue with installing an dependency called 'ICU'. I've installed ICU using the 'install unix package' button on the EngineYard dashboard but can't seem to fix this.