Use `delegate` to be more self-descriptive
Remove `TermApp.run` and `Application.run`

Fix #56.
Reduce line length of method
Use `<<` when append strings
Update documentation and capitalize comments

- `String#unicode_slice`
Use multiple assignment for readability
Rename `y` to `y_indices`
Merge pull request #70 from yous/patch-run

Remove `TermApp.run` and `Application.run`
Merge pull request #71 from yous/patch-method-line-length

Reduce line length of method
Merge pull request #72 from yous/patch-minor

Minor patches