Fixed blockquote plugin (author alone would not show up without title)

plugins/blockquote.rb

@@ -21,6 +21,7 @@ module Jekyll
   class Blockquote < Liquid::Block
     FullCiteWithTitle = /(\S.*)\s+(https?:\/\/)(\S+)\s+(.+)/i
     FullCite = /(\S.*)\s+(https?:\/\/)(\S+)/i
+    AuthorTitle = /([^,]+),([^,]+)/
     Author =  /(.+)/
 
     def initialize(tag_name, markup, tokens)
@@ -34,14 +35,12 @@ module Jekyll
       elsif markup =~ FullCite
         @by = $1
         @source = $2 + $3
-      elsif markup =~ Author
+      elsif markup =~ AuthorTitle
-        if $1 =~ /([^,]+),([^,]+)/
         @by = $1
         @title = $2.titlecase
-        else
+      elsif markup =~ Author
         @by = $1
       end
-      end
       super
     end