移除沒用到的 unit test 相關 file (from a100bd2)
Bug fix: board#update not found. 順便更新.gitignore
refine coding style: hash 改成 1.8 樣式、 2 個半形空白縮排、protected 放在同一層
Refactoring boards_controller and posts_controller. 把 find_board 抽出來成 before_filter
明確寫出 board_path 與 board_post_path 等