Create yesno.rb
Create information.rb
Update information.rb
Create warning.rb
Update messagebox.rb
Update messagebox.rb

Instance show method.
Update version.rb

Version to 0.1.0.
Auto require dir.

style omissible
Update yesno.rb

YesNo as Question
messagebox test
test writing
Update README.md

update example code of new calling.
Update README.md
Update messagebox.rb

fix all of directory files require.
Update warning.rb

MessageBox::Warn aliased by Warning
Warn, YesNo fix and tested.
MessageBox: Yes clicked returned 6. (messagebox_spec.rb)
fix README.md: Example Uses Warning, YesNo MessageBox
README.md: fix example
Merge branch 'develop'