The issue has been fixed.

Note that we should revert this when the issue is fixed.

Also, be consistent with Node.js' name.

For the sake of cleanliness.

v6 is the current stable version and will be an LTS version.
v5 is not an LTS version.

Refs https://github.com/nodejs/LTS

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This reverts commit d0059ac2.

Node.js 5.7.1 is out with the issue fixed.

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This should be reverted when the next 5.x version is out.

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See https://github.com/npm/npm/issues/11283

See https://github.com/travis-ci/travis-ci/issues/5092 for more details.
Reverts #18376

So that the build will stop failing due to https://github.com/travis-ci/travis-ci/issues/5092

"stable" is deprecated by nvm
Refs https://github.com/twbs/grunt-bootlint/pull/61
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Fixes #18225.

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Reverts part of 42697a4e

Reverts a1c170ed

Instead, use `bundleExec: true` for grunt-scss-lint.

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