better categorisation of transformers

lib/6to5/polyfill.js

@@ -3,4 +3,4 @@ if (typeof Symbol === "undefined") {
 }
 
 require("es6-shim");
-require("./transformation/transformers/generators/runtime");
+require("./transformation/transformers/es6-generators/runtime");

lib/6to5/transformation/transform.js

@@ -28,30 +28,30 @@ transform.moduleFormatters = {
 };
 
 _.each({
-  modules:                   require("./transformers/modules"),
-  propertyNameShorthand:     require("./transformers/property-name-shorthand"),
-  arrayComprehension:        require("./transformers/array-comprehension"),
-  generatorComprehension:    require("./transformers/generator-comprehension"),
-  arrowFunctions:            require("./transformers/arrow-functions"),
-  classes:                   require("./transformers/classes"),
+  modules:                   require("./transformers/es6-modules"),
+  propertyNameShorthand:     require("./transformers/es6-property-name-shorthand"),
+  arrayComprehension:        require("./transformers/es7-array-comprehension"),
+  generatorComprehension:    require("./transformers/es7-generator-comprehension"),
+  arrowFunctions:            require("./transformers/es6-arrow-functions"),
+  classes:                   require("./transformers/es6-classes"),
 
   _propertyLiterals:         require("./transformers/_property-literals"),
-  computedPropertyNames:     require("./transformers/computed-property-names"),
+  computedPropertyNames:     require("./transformers/es6-computed-property-names"),
 
-  spread:                    require("./transformers/spread"),
-  templateLiterals:          require("./transformers/template-literals"),
-  propertyMethodAssignment:  require("./transformers/property-method-assignment"),
-  defaultParameters:         require("./transformers/default-parameters"),
-  restParameters:            require("./transformers/rest-parameters"),
-  destructuring:             require("./transformers/destructuring"),
-  forOf:                     require("./transformers/for-of"),
-  unicodeRegex:              require("./transformers/unicode-regex"),
+  spread:                    require("./transformers/es6-spread"),
+  templateLiterals:          require("./transformers/es6-template-literals"),
+  propertyMethodAssignment:  require("./transformers/es5-property-method-assignment"),
+  defaultParameters:         require("./transformers/es6-default-parameters"),
+  restParameters:            require("./transformers/es6-rest-parameters"),
+  destructuring:             require("./transformers/es6-destructuring"),
+  forOf:                     require("./transformers/es6-for-of"),
+  unicodeRegex:              require("./transformers/es6-unicode-regex"),
   react:                     require("./transformers/react"),
 
-  constants:                 require("./transformers/constants"),
-  letScoping:                require("./transformers/let-scoping"),
+  constants:                 require("./transformers/es6-constants"),
+  letScoping:                require("./transformers/es6-let-scoping"),
 
-  generators:                require("./transformers/generators"),
+  generators:                require("./transformers/es6-generators"),
 
   _blockHoist:               require("./transformers/_block-hoist"),
   _declarations:             require("./transformers/_declarations"),

lib/6to5/transformation/transformers/es7-generator-comprehension.js

@@ -1,4 +1,4 @@
-var arrayComprehension = require("./array-comprehension");
+var arrayComprehension = require("./es7-array-comprehension");
 var t                  = require("../../types");
 
 exports.ComprehensionExpression = function (node) {