环境：
Ruby 1.9.1 开发环境 Aptana Studio3
状况：
我想要 debug, 结果c:/Ruby191/lib/ruby/site_ruby/1.9.1/rubygems.rb:323:in `bin_path': can't find
gem ruby-debug-ide ([">= 0"]) (Gem::GemNotFoundException)
from <internal:gem_prelude>:346:in `method_missing'
from c:/Ruby191/bin/rdebug-ide:19:in `<main>'
请帮帮我