v2.0.0

Added

• Travis: add 9 (@ralphtheninja)

Changed

• Update memdown to ~2.0.0 (@ralphtheninja)
• Update level-packager to ~2.1.1 (@ralphtheninja)
• README: normalize and tweak style (@ralphtheninja)
• README: add node badge (@ralphtheninja)
• Switch to plain MIT license (@ralphtheninja)

Removed

• Travis: remove 0.12, 5 and 7 (@ralphtheninja)