update rurema link
Merge pull request #7 from sho-h/update-rurema-link

update rurema link
specified ruby version for capistrano
capistrano-bundler
update capistrano
grouping
added capistrano/console
ja: Add note for semver
Merge branch 'yhara-note_for_semver'
use list-group instead of nav-pills
Merge pull request #9 from znz/list-group

Design candidate 1 : List group
Use list-group in `/` and `/en/`
Merge pull request #11 from znz/list-group-2

Use list-group in `/` and `/en/`
nginx: reduce Passenger workers

docs.ruby-lang.org has only CPU cores. We don't need 6 (the default
max number of Passenger workers) processes. More workers use more
memory.
Merge pull request #12 from kou/reduce-passenger-workers

nginx: reduce Passenger workers
rurema-search: keep existing Groonga database

bitclust-indexer supports in-place update. If database is removed, users
can't search full documents until database update is done.
Merge pull request #13 from kou/keep-groonga-database

rurema-search: keep existing Groonga database
bundle update
update conf
Remove needless rurema-search restart on updating database

rurema-search can run stable without restart.