Remove junk
Remove more junk
Fix gemspec
Rewrite README to reflect new goals of the project
Render simple hosts files
Keep filename in NonExistingHostsFile
Resolve simple references
Fix warning
Configuration
Happy path for CLI
Ask for user input for hosts basepath
Error if there's a reference loop
Small fixes in README
Change `HOSTS_BASEPATH` to `HOSTESSE_BASEPATH`

The rationale is that all configuration keys need the `HOSTESSE` prefix
to make good environment variable names.
Add To-do roadmap to 1.0.0
Retrieve configuration after storage
Test `Hostesse::CLI#run` without touching the filesystem
Default hosts path in multiple OSs
Supress all CLI output in tests
Remove done to-do