This fixes local getpeeraddr errors by ruby resolver.

Change-Id: I6018f3f156c8b6d6bf1421bcda62e3f972cc1807
diff --git a/_plugins/gitactivity.rb b/_plugins/gitactivity.rb
index 27b4ce1..d4a62c3 100644
--- a/_plugins/gitactivity.rb
+++ b/_plugins/gitactivity.rb
@@ -2,6 +2,7 @@
 require 'fileutils'
 require 'cgi'
 require 'httparty'
+require 'resolv-replace'
 
 module Jekyll
     module GitActivity