Update eslint to version 2.11.1 🚀

[greenkeeperio-bot]

Hello 👋

🚀🚀🚀

eslint just published its new version 2.11.1, 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 eslint – otherwise use this branch to work on adaptions and fixes.

Happy fixing and merging 🌴

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GitHub Release

• 64b0d0c Fix: failed to parse /*eslint comments by colon (fixes #6224) (#6258) (Toru Nagashima)
• c8936eb Build: Don't check commit count (fixes #5935) (#6263) (Nicholas C. Zakas)
• 113c1a8 Fix: max-statements-per-line false positive at exports (fixes #6264) (#6268) (Toru Nagashima)
• 03beb27 Fix: no-useless-rename false positives (fixes #6266) (#6267) (alberto)
• fe89037 Docs: Fix rule name in example (#6279) (Kenneth Williams)

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