Update gulp-eslint to version 2.0.0 🚀

[greenkeeperio-bot]

Hello :wave:

:rocket::rocket::rocket:

gulp-eslint just published its new version 2.0.0, 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 gulp-eslint – 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 44 commits .

• 639e388 2.0.0
• 55f0c29 Update ESLint dependency;
• c11bba6 Remove rules that have been removed in [email protected];
• 7f01da7 2.0.0-rc-3
• 5851668 Rename .eslintrc to .eslintrc.yml;
• e7ba0f2 2.0.0-rc-2
• 90841cb Tighten various test case configs;
• 3536eeb Update changeling;
• cbe6731 2.0.0-rc-1
• dcdfff7 Update to ESLint next/2.0.0-rc-* dependency;
• 7f190a6 Fix listing error;
• adf2180 Fix path in comment
• 9378eef Simplify the cached-lint watch.js example;
• 6def722 Merge pull request #121 from 5im0n/update-readme
• 67fcd75 Update eslint.results in README.md

There are 44 commits in total. See the full diff.

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