Update grunt-jsdoc to version 2.0.0 🚀

[greenkeeperio-bot]

Hello :wave:

:rocket::rocket::rocket:

grunt-jsdoc 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 grunt-jsdoc – 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 9 commits .

• c7c80b6 bump version
• fc0fb7a Merge branch 'milestone/2.0.0'
• b874bf6 check and enable no src/dest config
• 02b6924 global grunt isn't required anymore
• e9918db private options stick to the default behavior
• bb754ec use cross-spawn-async
• 57b2e36 update grunt and move to eslint
• 84ca703 Merge pull request #162 from vladikoff/patch-1
• bf4fc4f Fix typo in task description

See the full diff.

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