Update README.md

Fix bug in README.md
Merge pull request #137 from jsteinberg/master

Update README.md
rm unused code
remove dependency on 'localized' from 'factories'
moved REPL tools to the MotionRepl module - WAY cool!
moving Numeric code to NSNumber (BigDecimal support)
Merge branch 'master' into osx

Conflicts:
	Gemfile.lock
	lib/all/sugarcube-numbers/numeric.rb
	lib/cocoa/sugarcube-nsdate/numeric.rb
	lib/cocoa/sugarcube-repl/object.rb
	lib/sugarcube-nsdate/nsnumber.rb
	lib/sugarcube-nsdate/numeric.rb
	lib/sugarcube-numbers/nsnumber.rb
	lib/sugarcube-numbers/numeric.rb
	lib/sugarcube-repl/kernel.rb
	lib/sugarcube-repl/repl.rb
	lib/version.rb
don't check for 'SugarCube', it doesn't work