Merge pull request #45 from kciter/master

페이스북 링크 추가

Author: ChangJoo-Park

_config.yml

@@ -43,6 +43,7 @@ facebook_comments_number: 10
 
 # Social icons
 slack_url: https://vuejs-korea.signup.team/
+facebook_url: https://www.facebook.com/groups/1152461054807344/
 github_username: vuejs-kr
 bitbucket_username:
 stackoverflow_id:

_includes/social_links.html

@@ -3,6 +3,9 @@
     {% if site.slack_url %}
       <a class="fa fa-slack" href="{{ site.slack_url }}"></a>
     {% endif %}
+	{% if site.facebook_url %}
+	<a class="fa fa-facebook" href="{{ site.facebook_url }}"></a>
+	{% endif %}
     {% if site.github_username %}
       <a class="fa fa-github" href="https://github.com/{{ site.github_username }}"></a>
     {% endif %}