sudo su - redmine

cd redmine/plugins

wget http://projects.andriylesyuk.com/attachments/download/563/redmine_scm-0.5.0b.tar.bz2

tar xf redmine_scm-0.5.0b.tar.bz2

rm redmine_scm-0.5.0b.tar.bz2

rake redmine:plugins:migrate RAILS_ENV=production

scm.yml :

production:
  deny_delete: false
  auto_create: false
  force_repository: false
  max_repos: 0
  only_creator: false
  allow_add_local: false
  allow_pickup: false
  github:
    path: /opt/redmine/repositories/github
    api:
      client-id: <client-id-from-github-api>
      client-secret: <client-secret-from-github-api>
      register_hook: true

mkdir -p /opt/redmine/repositories/github

cd ~/redmine

bundle install

exit

sudo service apache2 restart