Merge pull request #18 from Core00077/master

确保了cheerio返回非html实体编码，同时修复了hexo主页上emoji不能正常显示的问题

index.js

@@ -29,7 +29,8 @@ if (options.enable !== false) {
   hexo.extend.filter.register('after_post_render', data => {
     if (!options.inject && data['no-emoji']) { return data }
 
-    const $ = cheerio.load(data.content)
+    const $ = cheerio.load(data.content, {decodeEntities: false})
+    const excerpt = cheerio.load(data.excerpt,{decodeEntities: false})
 
     if (options.inject) {
       $('body').append(`<script>
@@ -55,9 +56,11 @@ if (options.enable !== false) {
 
     if (!data['no-emoji']) {
       replaceColons($('body')[0], $, emojis)
+      replaceColons(excerpt('body')[0], excerpt, emojis)
     }
 
     data.content = $('body').html()
+    data.excerpt = excerpt('body').html()
     return data
   })