v2.2.1-56

What's Changed

• Update readme by @wyne in #305
• Slice tests by @wyne in #307
• Create LICENSE by @wyne in #306
• eslint semicolons and eol-last by @wyne in #308
• Expo doctor, remove changelog by @wyne in #309
• Test helpers - navigation by @wyne in #310
• Version 2.2.1-56 by @wyne in #311

Full Changelog: v2.2.0-55...v2.2.1-56