v2.0.0

Changed

• Upgrade level-packager from ~1.2.0 to ~4.0.0 (@ralphtheninja)
• Upgrade leveldown-hyper from ~1.1.3 to ~2.0.0 (@ralphtheninja)
• Update README style (@ralphtheninja)
• Update LICENSE style (@ralphtheninja)

Added

• Add node 9 and 10 to Travis (@ralphtheninja)
• Add remark tooling (@ralphtheninja)
• Add CONTRIBUTORS.md (@ralphtheninja)
• Add UPGRADING.md (@ralphtheninja)

Removed

• Remove node 0.12, 5 and 7 from Travis (@ralphtheninja)
• Remove contributors from package.json (@ralphtheninja)
• Remove g++-4.8 addon from Travis (@ralphtheninja)