Update installation.md
Created by: schwindelbub
We need mysql-client and libmysqlclient-dev. Without these packages the bundle install will fail with 'An error occurred while installing mysql2 (0.3.11), and Bundler cannot continue.'
Created by: schwindelbub
We need mysql-client and libmysqlclient-dev. Without these packages the bundle install will fail with 'An error occurred while installing mysql2 (0.3.11), and Bundler cannot continue.'