Minor update | tiny refactoring

* README
* es6-transpiler: add cleanupTree as last plugin, fullES6 = true by
default , output.errors
* rename es6toes3 -> es6toes5
* Update local esprima:harmony
* Update local StringAlter
* todo.js
* package.json
* run-tests.js
* add uuid property to Scope instance
Tiny refactoring
github.com/olov/defs/issues/12
loopClosures transform via iife

generate iife for closures over block scoped variables
github.com/olov/defs/issues/2
* tests