spec/media_wiki/utils_spec.rb: Fix for Ruby 1.9.
spec/media_wiki/utils_spec.rb: Fix for Ruby 1.9.

Ruby 2.0 changed default source file encoding to UTF-8.

thenovices/mediawiki-gateway,jpatokal/mediawiki-gateway,zloydadka/mediawiki-gateway,blackwinter/mediawiki-gateway