Merge pull request #15 from eitoball/fix_no_such_column__score_error

Fix Groonga::NoSuchColumn error when interating ResultSet

Patch by Eito Katagiri. Thanks!!!
Fix style

We don't put spaces after "{" and before "}".
test: group no score case
test: indent
test: check also values instead of assert_nothing_raised
test: remove duplicated information from test name
test: remove needless :sub_records option

Normally, it is not used. So tests should not use it.
test: add a test for array table case
Follow new rroonga API

"score" availability should be checked by support_score? not
support_sub_records?.
Fix indentation in migration template file