Add rake preview task for testing /test during theme development

test/_config.yml

@@ -14,7 +14,7 @@ title_separator          : "-"
 name                     : "Your Name"
 description              : "Minimal Mistakes theme test."
 url                      : # the base hostname & protocol for your site e.g. "https://mmistakes.github.io"
-baseurl                  : # the subpath of your site, e.g. "/blog"
+baseurl                  : "/test"
 repository               : # GitHub username/repo-name e.g. "mmistakes/minimal-mistakes"
 teaser                   : # path of fallback teaser image, e.g. "/assets/images/500x300.png"
 # breadcrumbs            : false # true, false (default)
@@ -57,7 +57,7 @@ yandex_site_verification :
 
 # Social Sharing
 twitter:
-  username               :
+  username               : "mmistakes"
 facebook:
   username               :
   app_id                 :
@@ -102,7 +102,7 @@ author:
   stackoverflow    : # "123456/username" (the last part of your profile url, e.g. http://stackoverflow.com/users/123456/username)
   steam            :
   tumblr           :
-  twitter          :
+  twitter          : "mmistakes"
   vine             :
   weibo            :
   xing             :