message: Fix failing build under node.js 6
diff: const { expect } = require("chai")
  +const { lt } = require("semver")
  +
  +// not sure why this fails on nodejs 6 nor do I believe it is relevant to the example.
  +let itButSkipOnNode6 = lt(process.version, "8.0.0") ? it.skip : it
  describe("Chevrotain Webpacking support", () => {
  - it("Can be webpacked without any special configuration when the grammar and tokens are defined in the same file", () => {
  + itButSkipOnNode6(
  + "Can be webpacked by configuring reserved words for name mangling",
  + () => {
  const parse = require("../lib/webpacked.min").parse
  const parseResult = parse("[1,2,3]")
  expect(parseResult.errors).to.be.empty
  - })
  + }
  + )
  })
  