change lib struc - mincer required, options and babel optional

improve readme with doc

README.md

@@ -15,3 +15,51 @@
 [![Codacy Badge](https://api.codacy.com/project/badge/Coverage/4b85c1c632514d10a85397a5eeb06c8d)](https://www.codacy.com/app/naxmefy/mincer-babel-engine?utm_source=github.com&utm_medium=referral&utm_content=damncreative/mincer-babel-engine&utm_campaign=Badge_Coverage)
 
 [![NPM](https://nodei.co/npm/mincer-babel-engine.png?downloads=true&downloadRank=true&stars=true)](https://nodei.co/npm/mincer-babel-engine/)
+
+## installation
+
+```
+$ npm install mincer-babel-engine
+```
+
+## usage
+
+```JavaScript
+var babelEngine = require('mincer-babel-engine');
+var Mincer = require('mincer');
+
+babelEngine(Mincer);
+```
+
+### Lib Function
+
+**babelEngine(mincer [,options] [,babel-core])**
+
+```JavaScript
+var babelEngine = require('mincer-babel-engine');
+var mincer = require('mincer');
+var babelCore = require('babel-core');
+
+// examples
+babelEngine(mincer); // with mincer
+babelEngine(mincer, {}); // with mincer and options
+babelEngine(mincer, {}, babel); // with mincer, options and own babel-core
+```
+
+## options
+
+* ``` extensions ``` Supported extensions by this engine. (``` Array ``` of Strings. Default: ``` ['.es6'] ```)
+* ``` babel ``` Babel options to use for transform. (``` Object ```. Default: ``` {} ```)
+
+## configure
+
+**Mincer.BabelEngine.configure(options)**
+
+```JavaScript
+// ...
+Mincer.BabelEngine.configure({
+  preset: ['es2015']
+});
+```
+
+Hint: The object in configure is passed to ``` babel ``` property of engine options.

lib/index.js

@@ -13,13 +13,9 @@ var defaultOptions = {
     babel: {}
 };
 
-module.exports = function (options, mincer, babel) {
+module.exports = function (mincer, options, babel) {
     options = _.merge({}, defaultOptions, options);
 
-    if (mincer == null) {
-        mincer = require('mincer');
-    }
-
     debug('setup engine');
     debug('options %j', options);
 
@@ -59,7 +55,5 @@ module.exports = function (options, mincer, babel) {
         mincer.registerEngine(ext, mincer.BabelEngine);
     });
 
-    mincer.registerEngine('.es6', mincer.BabelEngine);
-
     Object.defineProperty(mincer.BabelEngine, 'defaultMimeType', {value: 'application/javascript'});
 };

package.json

@@ -10,11 +10,11 @@
   "dependencies": {
     "babel-core": "^6.9.1",
     "debug": "^2.2.0",
-    "lodash": "^4.13.1",
-    "mincer": "^1.4.1"
+    "lodash": "^4.13.1"
   },
   "devDependencies": {
     "babel-preset-es2015": "^6.9.0",
+    "mincer": "^1.4.1",
     "mocha": "^2.5.3",
     "should": "^9.0.2"
   }

test/helper.spec.js

@@ -2,9 +2,9 @@
 
 var babelEngine = require('..');
 var mincer = require('mincer');
-babelEngine({
+babelEngine(mincer, {
     extensions: ['.es6', '.js']
-}, mincer);
+});
 
 before(function() {
     this.Mincer = mincer;