Validate uniqueness of `name` under `parent`
Validate `board`, `writer`, `num` of Post
Use Travis CI
Validate `owner` of Board unless `is_dir`
Merge pull request #86 from yous/patch-model-rspec

Validate Board and Post
Merge pull request #88 from yous/patch-travis

Use Travis CI
Update README.md for travis
Update README.md
add movements to read board menu
focus read menu after selecting board
add bullet to Gemfile
Enable bullet on test environment
Merge pull request #91 from synthdnb/patch/enable_bullet

Patch/enable bullet
implement scrolling in post list
erase body before printing post list
Update documentation

- `TermApp::LocoMenu#process`
- `TermApp::ReadBoardMenu#process_key`
- `TermApp::ReadBoardMenu#scroll`
Simplify logic processing `selected_menu`
Update gems
Regenerate offenses of RuboCop
Align chaining methods