add company_names which is extracted from wikipedia
(http://ko.wikipedia.org/wiki/%EB%8C%80%ED%95%9C%EB%AF%BC%EA%B5%AD%EC%9D%98_%EA%B8%B0%EC%97%85_%EB%AA%A9%EB%A1%9D)
Merge pull request #30 from stray-leone/company_names

add company_names which is extracted from wikipedia