Loading settings from ENV. A task pushing settings to Heroku
Fixed Heroku rake task
Added README describing Heroku local config workflow. Refs #56
Fixed an issue with Heroku ENV not accessible while assets:precompile
Fixed an issue with Heroku ENV not accessible while assets:precompile 2
Updated version for heroku ENV issue
Fixes
some better changes description for 0.3.4
Merge branch 'feature/heroku_compatibility' of https://github.com/ssidelnikov/rails_config into ssidelnikov-feature/heroku_compatibility

Conflicts:
	lib/rails_config/integration/rails.rb
	lib/rails_config/version.rb
Merge branch 'ssidelnikov-feature/heroku_compatibility'
bump the version to 0.4.0