Add support for Windows-1253 (greek). Currently, people using greek on windows which defaults to Windows-1253 cannot use KidsRuby.
C:\Users\Διαχειριστής>C:\KidsRuby\Ruby1.9.2\bin\ruby.exe C:\KidsRuby\KidsRuby\main.rb
C:/KidsRuby/Ruby1.9.2/lib/ruby/site_ruby/1.9.1/rubygems/defaults.rb:43:in `exist?': "\x98" to UTF-8 in conversion from W
indows-1253 to UTF-8 (Encoding::UndefinedConversionError)
from C:/KidsRuby/Ruby1.9.2/lib/ruby/site_ruby/1.9.1/rubygems/defaults.rb:43:in `default_path'
from C:/KidsRuby/Ruby1.9.2/lib/ruby/site_ruby/1.9.1/rubygems.rb:752:in `path'
from C:/KidsRuby/Ruby1.9.2/lib/ruby/site_ruby/1.9.1/rubygems/source_index.rb:59:in `installed_spec_directories'
from C:/KidsRuby/Ruby1.9.2/lib/ruby/site_ruby/1.9.1/rubygems.rb:1051:in `source_index'
from C:/KidsRuby/Ruby1.9.2/lib/ruby/site_ruby/1.9.1/rubygems/gem_path_searcher.rb:135:in `init_gemspecs'
from C:/KidsRuby/Ruby1.9.2/lib/ruby/site_ruby/1.9.1/rubygems/gem_path_searcher.rb:14:in `initialize'
from C:/KidsRuby/Ruby1.9.2/lib/ruby/site_ruby/1.9.1/rubygems.rb:1010:in `new'
from C:/KidsRuby/Ruby1.9.2/lib/ruby/site_ruby/1.9.1/rubygems.rb:1010:in `searcher'
from C:/KidsRuby/Ruby1.9.2/lib/ruby/site_ruby/1.9.1/rubygems.rb:207:in `try_activate'
from C:/KidsRuby/Ruby1.9.2/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:56:in `rescue in require'
from C:/KidsRuby/Ruby1.9.2/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:35:in `require'
from C:/KidsRuby/KidsRuby/main.rb:3:in `<main>'
Add support for Windows-1253 (greek). Currently, people using greek on windows which defaults to Windows-1253 cannot use KidsRuby.