Use droonga-engine for development
Use droonga-http-server for development
Generate catalog.json for development environment.

    $ mkdir db
    $ cd db
    $ bundle exec droonga-engine-catalog-generate --hosts=127.0.0.1 --output=./catalog.json
Use foremant for development.
Add Procfile to set development environment up.
Add README with steps to set development environment up.
Merge pull request #2 from KitaitiMakoto/dev-env

Development environment

Patch by KITAITI Makoto. Thanks!!!