improve src/main.js and doc about the version of BS

Author: Ken Berkeley

dist/min.js

@@ -12,7 +12,7 @@ Under this premise, you could build the most suitable Datatable for your own sce
 
 The dependencies of this project are shown as below:
 
-* BootStrap + Font Awesome（must available globally）
+* BootStrap 3 + Font Awesome（must available globally）
 * [lodash: groupBy / throttle / debounce](https://lodash.com/docs)
 
 P.S. *BootStrap* and *Font Awesome* can be replaced with other popular libraries.  

doc/en/README.md

@@ -9,7 +9,7 @@
 
 本 Datatable 的依赖如下：
 
-* BootStrap + Font Awesome（全局引入）
+* BootStrap 3 + Font Awesome（全局引入）
 * [lodash: groupBy / throttle / debounce](https://lodash.com/docs)
 
 注：*BootStrap* 以及 *Font Awesome* 的可替换性极强，您完全可以使用其他库替代（一般就是改一下类名即可）

doc/zh-cn/README.md

@@ -12,5 +12,5 @@
 
 <script src="//unpkg.com/jquery@2.1.4/dist/jquery.min.js"></script>
 <script src="//unpkg.com/bootstrap@3.3.5/dist/js/bootstrap.min.js"></script>
-<script type="text/javascript" src="client.a1501350.js"></script></body>
+<script type="text/javascript" src="client.e34add27.js"></script></body>
 </html>

examples/dist/client.a1501350.js

@@ -1,7 +1,7 @@
 {
   "name": "vue2-datatable-component",
   "description": "The best Datatable for Vue.js 2.x which never sucks",
-  "version": "2.3.0",
+  "version": "2.3.1",
   "main": "dist/min.js",
   "module": "src/main.js",
   "author": "Ken Berkeley <kenberkeley@foxmail.com>",

examples/dist/client.e34add27.js

@@ -1,7 +1,7 @@
 import Datatable from './index.vue'
 
 Datatable.install = (Vue, options) => {
-  const locale = options && options.locale || {}
+  const locale = options ? options.locale : {}
 
   // this might be the simplest i18n solution
   Vue.prototype.$i18nForDatatable = srcTxt => locale[srcTxt] || srcTxt