Update .gitignore

ignore config/discourse.pill

Author: MikeBinstock

.gitignore

@@ -22,6 +22,7 @@ dump.rdb
 
 config/database.yml
 config/redis.yml
+config/discourse.pill
 
 # Ignore the default SQLite database and db dumps
 /db/*.sqlite3
@@ -80,4 +81,4 @@ chef/tmp/*
 config/version.rb
 
 # ignore the Ruby Version manager (rvm) file
-.rvmrc
+.rvmrc