small fixes
small fixes

Level/abstract-leveldown,calvinmetcalf/SQLdown,bryce-gibson/SQLdown,snowyu/node-abstract-nosql,watson/abstract-leveldown,ralphtheninja/abstract-leveldown,shimonenator/couchbasedown,ralphtheninja/abstract-leveldown,bigeasy/abstract-leveldown,bryce-gibson/SQLdown,calvinmetcalf/SQLdown