ADD: rollup build.js file, revision README.md; remove arrow function in src

Author: mithriljs-cn

.gitignore

@@ -1,3 +1,2 @@
 node_modules
-dist
 *.log

README.md

@@ -23,24 +23,23 @@ m_j2c( obj, document.querySelector('#some_ul') )	//apply j2c style to #some_ul
 
 This will do 3 things in order:
 
-**1. insert `style` tag into `header`, which contains css:**
+1. insert `style` tag into `header`, which contains css:
 ````CSS
 .item_j2c_qh10fm_1imf8sp_8nqwug_810slq_6 li{
 float:left;
 }
 ````
 
-**2. cache the generated style name && dom ref**
-
-**3. replace all `.item` class into `.item_j2c_qh10fm_1imf8sp_8nqwug_810slq_6` in `#some_ul` and it's children**
+2. `#some_ul` and it's children, change `.item` class into `.item_j2c_qh10fm_1imf8sp_8nqwug_810slq_6`
+3. cache the generated style name && dom ref
 
 
 
 ## Benefit
 
 - **no css name conflict**, all class is localized! ( powered by [j2c](https://github.com/j2css/j2c) )
-- apply **js computation to CSS**!
-- add css **namespaces** to a page/dom, switch using a js call
+- **js object computation to CSS**!
+- add css **namespaces** to a page/dom, a js function call to switch
 
 
 

build.js

@@ -0,0 +1,48 @@
+var fs = require( 'fs' )
+var zlib = require( 'zlib' )
+var rollup = require( 'rollup' )
+var uglify = require('uglify-js')
+
+// **** build.js modified from pygy's j2c project *****
+
+var roll = rollup.rollup({
+  entry: 'src/m_j2c.js'
+})
+
+var formats = {
+  amd:'amd',
+  cjs:'commonjs',
+  es6:'es6',
+  umd:'umd',
+  iife:'global',
+}
+Object.keys(formats).forEach(function(format){
+  roll.then( function ( bundle ) {
+    var name = formats[format]
+    var result = bundle.generate({
+      // output format - 'amd', 'cjs', 'es6', 'iife', 'umd'
+      format: format,
+      moduleId: 'm_j2c',
+      moduleName: 'm_j2c',
+    });
+    fs.writeFileSync( 'dist/m_j2c_'+ name +'.js', result.code );
+
+    if(format!=='iife') return; // only minify for global
+
+    var minified = uglify.minify(result.code, {
+      fromString: true,
+      mangle: true,
+      compress: {}
+    }).code
+    fs.writeFileSync('dist/m_j2c_' + name + '.min.js', minified)
+
+    zlib.gzip(minified, function(_, buf){
+      console.log(name, _ || buf.length)
+      fs.writeFileSync('dist/m_j2c_' + name + '.min.js.gz', buf)
+    })
+
+  }).then(null, function (e) {console.log(format, e)})
+
+})
+
+