Added gitignore pattern type.
Added gitignore pattern type.

syohex/the_platinum_searcher,DaSea/the_platinum_searcher,cmars/tools,cmars/tools,monochromegane/the_platinum_searcher,yuya-takeyama/the_platinum_searcher,aeruder/the_platinum_searcher,thomasf/the_platinum_searcher,cmars/tools,tw4452852/the_platinum_searcher,cmars/tools