Handle Bit.ly exceptions

Mainly for when there is no internet connection

lib/articles.rb

@@ -24,6 +24,7 @@ module WezM
       end
 
       def short_url(url)
+        begin
           @bitly ||= Bitly.new('wezm', 'R_f2bfdace56c886671086eb0c8acb9ce7')
           @cache ||= {}
           unless u = @cache[url]
@@ -32,6 +33,9 @@ module WezM
             puts "Cache hit on #{url}"
           end
           u.short_url
+        rescue BitlyError
+          nil
+        end
       end
 
     end