Ignore failures on the ruby 1.8 build
Ignore failures on the ruby 1.8 build

There are many failures due to ruby 1.8 hashes being unordered and
encodings being different to ruby 1.9. But at least there's a build

iainbeeston/json-schema,openc/json-schema,ruby-json-schema/json-schema,openc/json-schema,ganeshkumar/json-schema,RST-J/json-schema