version bump for @0.2.0 release
version bump for @0.2.0 release

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