Update classnames to version 2.2.1 🚀

[greenkeeperio-bot]

Hello :wave:

:rocket::rocket::rocket:

classnames just published its new version 2.2.1, which is not covered by your current version range.

If this pull request passes your tests you can publish your software with the latest version of classnames – otherwise use this branch to work on adaptions and fixes.

Happy fixing and merging :palm_tree:

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The new version differs by 53 commits .

• 892a3ae v2.2.1
• 712a556 Updating changelog
• 2c4f0cb Adding AMD deps argument for bind and dedupe variants
• a8219a0 Merge pull request #61 from schrodinger/master
• 638c6fa Add deps parameter to the AMD module
• 3dd57a0 Merge pull request #60 from diegolacarta/patch-1
• 1487c40 Update README.md to properly reflect working API
• 2abfa4e Adding real-world css modules example
• 5fe9b4d Merge pull request #59 from hellectronic/master
• 3d3f9df Update README.md
• 34226ab v2.2.0
• 1eb545e Updating changelog
• bfdde35 Adding "Usage with React.js" guide, fixes #43
• 84fccf8 Adding usage docs for bind variant
• 8c9627d Simplifying dedupe documentation

There are 53 commits in total. See the full diff.

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