Do not override built-in methods
added before_script
fix build task
Merge pull request #1 from nobu/for-2.1

Do not override built-in methods
move before_script to before_install
ummmm
backport r43503
bump version to 0.0.2
backport r43501 and r43503
added mkmf to .gitignore
remove unnecessary test
added helper file for bundler
backport r44018 from ruby/ruby
fix method name
Support ruby 1.9