Set rails_env if parts of capistrano-rails are required
Previously, `rails_env` was set only on `capistrano/rails` required.
That caused issues when developers required only `capistrano/rails/assets` or migrations. Fixed #699
Merge pull request #21 from kirs/set-rails-env-fix

Set rails_env if parts of capistrano-rails are required
Fixed cleanup_assets task
Merge pull request #24 from CodingFu/patch-2

Fixed cleanup_assets task
Minor README improvement
Depend on capistrano-bundler, which is required for any Rails setup
as suggested by @Kriechi https://github.com/capistrano/rails/pull/15#issuecomment-27129808
Merge pull request #22 from kirs/depend-capistrano-bundler

Depend on capistrano-bundler, which is required for any Rails setup
Minor
Why do we advise users to execute cap install?
Preparing for 1.1.0: updated changelog and gemspec
Updating version in README
Add `assets_roles` and `assets_prefix` options for asset customisation
Merge pull request #30 from mikespokefire/feature/add-assets-roles

Add `assets_roles` and `assets_prefix` options for asset customisation
Version bump and new dependencies
Docs fix for #37