* Adds rule superfluous-else (an extension of indent-error-flow)
* Fix superfluous-else rule struct namming.
* Adds superfuous-else rule to the rules table
* Modifies empty-block rule to ignore bodies of
func literals and funcs
* add test cases on functions with a receiver for completeness
* Adds rule superfluous-else (an extension of indent-error-flow)
* initial (non functional) version
* empty-block working version
* adds tests for empty-block rule
* Adds empty-block to the rules table
* code clean-up
