Fixed using `CI` env variable instead of `TRAVIS` in `getBrowsers()`.

[martnpaneq]

Suggested merge commit message (convention)

Internal: Fixed using CI env variable instead of TRAVIS in getBrowsers(). See #408.

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Additional information

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[coveralls]

Pull Request Test Coverage Report for Build fd528b9c-247a-4eab-b014-f7a6bfcae102

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 100.0%

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Totals
Change from base Build f97670c8-9482-47fa-99b3-f0f8864dcf37:	0.0%
Covered Lines:	70
Relevant Lines:	70

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💛 - Coveralls