Updated examples.
Merge pull request #28 from chicagogrooves/selector-style-tag-initialization

Provided syntax ala #id.cls.cls2 for initializing tags' classes and ids
Merge pull request #30 from chicagogrooves/update-examples

Update examples
Allowed reactive to be used by requirejs. Includes example app required-todos.
Merge pull request #35 from chicagogrooves/umd-modularize2

Allow reactive to be used by requirejs and Nodejs
Made transactions nestable.
Merge pull request #36 from cpoirier/master

Make transactions nestable.