Remove useless method from Effects plugin
Fix "then()" method so as it behaves like jQuery breaking the flow if previous fails. Add convenient method "or()" to continue the flow when we have different options to resolve an asynchronous process. Add "and()" method as an alias to "then()". "and()" and "or()" makes gQuery promises much more useful and declarative.
Fix "or" tests. Remove javadoc line
Merge pull request #231 from manolo/master

"or" and "and" methods in promisses