Add CI for downloading emojis

.travis.yml

@@ -0,0 +1,7 @@
+language: node_js
+node_js:
+  - "8"
+script:
+  - node update-emojis.js
+after_success:
+  - bash push.sh

push.sh

@@ -0,0 +1,19 @@
+#!/bin/sh
+
+setup_git() {
+  git config --global user.email "travis@travis-ci.org"
+  git config --global user.name "Travis CI"
+}
+
+commit_git() {
+  git add --all
+  git commit -am "[ci skip] Travis build: $TRAVIS_BUILD_NUMBER"
+}
+
+push_git() {
+  git push https://${GH_TOKEN}@github.com/crimx/hexo-filter-github-emojis.git HEAD:master
+}
+
+setup_git
+commit_git
+push_git

update-emojis.js

@@ -16,7 +16,7 @@ request({
   if (error || !_.isObject(json)) {
     console.error('Failded to download Github emojis.')
     console.log(error, response, json)
-    return
+    process.exit(1)
   }
 
   const latestEmojis = Object.keys(json).reduce((emojis, name) => {
@@ -39,6 +39,7 @@ request({
     function (err) {
       if (err) {
         console.warn(err)
+        process.exit(1)
       } else {
         console.log(`Update ${Object.keys(emojis).length} emojis`)
       }