Upgraded unicode-display_width gem

Author: jasnow

Gemfile.lock

@@ -320,7 +320,7 @@ GEM
       thread_safe (~> 0.1)
     uglifier (4.1.20)
       execjs (>= 0.3.0, < 3)
-    unicode-display_width (1.4.0)
+    unicode-display_width (1.4.1)
     unicorn (5.4.1)
       kgio (~> 2.6)
       raindrops (~> 0.7)