diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8f63f962fb..376cb4584f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,15 @@
 
 ## v2.0.0
 
+`2018-06-11`
+
+* fix:      reDraw edge after layout
+* feat:     add beforelayout && afterlayout event
+* chore:    .travis.yml add add Node.js
+* chore:    .travis.yml cache node_modules
+
+## v2.0.0
+
 `2018-06-06`
 
 * refactor: 重构架构 && 代码
diff --git a/bin/version.js b/bin/version.js
new file mode 100644
index 0000000000..06698b0863
--- /dev/null
+++ b/bin/version.js
@@ -0,0 +1,13 @@
+#!/usr/bin/env node
+const fs = require('fs');
+const path = require('path');
+const cPath = path.join(process.cwd(), './package.json');
+const version = require('../src/version');
+const pk = JSON.parse(fs.readFileSync(cPath, 'utf8'));
+pk.version = version;
+
+fs.writeFile(cPath, JSON.stringify(pk, null, '  '), function(err) {
+  if (err) {
+    return console.error(err);
+  }
+});
diff --git a/package.json b/package.json
index d94cfcc371..350ec28789 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@antv/g6",
-  "version": "2.0.0",
+  "version": "2.0.1-beta",
   "description": "graph visualization frame work",
   "main": "lib/index.js",
   "browser": "build/g6.js",
@@ -89,12 +89,12 @@
     "coverage-viewer": "torch-coverage",
     "demos": "electron ./demos/app.js",
     "demos-web": "node ./demos/app.js --web --port 2046",
-    "dev": "npm run watch & npm run demos-web",
+    "dev": "npm run demos-web & npm run watch",
     "dist": "npm run mkdir-dist && npm run build && npm run copy",
     "lint": "eslint --ext .js ./src",
     "lint-fix": "eslint --ext .html,.js --fix ./",
     "mkdir-dist": "node ./bin/mkdir-dist.js",
-    "prepublishOnly": "npm run build-lib && npm run dist",
+    "prepublishOnly": "npm run build-lib && npm run dist && node ./bin/version.js",
     "screenshot": "node ./bin/screenshot.js",
     "start": "npm run dev",
     "test": "torch --compile --renderer --recursive ./test/unit",
@@ -121,4 +121,4 @@
   "engines": {
     "node": ">=8.9.0"
   }
-}
+}
\ No newline at end of file
diff --git a/src/controller/layout.js b/src/controller/layout.js
index 3e2304afa7..67f76c5c88 100644
--- a/src/controller/layout.js
+++ b/src/controller/layout.js
@@ -56,6 +56,7 @@ class Controller extends Base {
   layout() {
     const graph = this.graph;
     const processer = this.processer;
+    graph.emit('beforelayout');
     const nodes = graph.getNodes()
       .filter(node => {
         return node.isVisible();
@@ -72,6 +73,7 @@ class Controller extends Base {
       });
     graph._executeLayout(processer, nodes, edges);
     graph.updateNodePosition();
+    graph.emit('afterlayout');
   }
   getLayoutProcesser() {
     return this.processer;
diff --git a/src/global.js b/src/global.js
index ac03b9bbe9..70ca57ed22 100644
--- a/src/global.js
+++ b/src/global.js
@@ -2,6 +2,7 @@
  * @fileOverview global config
  * @author huangtonger@aliyun.com
  */
+const version = require('./version');
 
 module.exports = {
   trackable: true,
@@ -26,5 +27,5 @@ module.exports = {
   updateEasing: 'easeQuadOut',
   enterEasing: 'easeQuadOut',
   leaveEasing: 'easeQuadOut',
-  version: '____G6_VERSION____'
+  version
 };
diff --git a/src/index.js b/src/index.js
index 338c330de1..4469ea0c0d 100644
--- a/src/index.js
+++ b/src/index.js
@@ -5,6 +5,7 @@
 const Shape = require('./shape/');
 const Handler = require('./handler');
 const Global = require('./global');
+const version = require('./version');
 
 const G6 = {
   Graph: require('./graph'),
@@ -20,7 +21,7 @@ const G6 = {
   registerGroup: Shape.registerGroup,
   registerGuide: Shape.registerGuide,
   registerBehaviour: Handler.registerBehaviour,
-  version: Global.version
+  version
 };
 
 G6.track = function(enable) {
diff --git a/src/item/edge.js b/src/item/edge.js
index 8fda8141fb..dbf1859141 100644
--- a/src/item/edge.js
+++ b/src/item/edge.js
@@ -67,6 +67,8 @@ class Edge extends Item {
       const keyShape = this.keyShape;
       const shapeObj = this.shapeObj;
       keyShape.attr('path', shapeObj.getPath(this));
+    } else {
+      this.draw();
     }
     this._afterDraw();
   }
diff --git a/src/track.js b/src/track.js
index 2e85211259..3721fb13de 100644
--- a/src/track.js
+++ b/src/track.js
@@ -4,6 +4,7 @@
  */
 const Global = require('./global');
 const SERVER_URL = 'https://kcart.alipay.com/web/bi.do';
+const version = require('./version');
 
 // 延迟发送请求
 setTimeout(function() {
@@ -13,7 +14,7 @@ setTimeout(function() {
       pg: document.URL,
       r: new Date().getTime(),
       g6: true,
-      version: Global.version,
+      version,
       page_type: 'syslog'
     };
     const d = encodeURIComponent(JSON.stringify([ newObj ]));
diff --git a/src/version.js b/src/version.js
new file mode 100644
index 0000000000..96d156f6e6
--- /dev/null
+++ b/src/version.js
@@ -0,0 +1 @@
+module.exports = '2.0.1-beta';