Document that Cypress.env() parses booleans

Given CYPRESS_IS_TRAVIS=true cypress open, when I run Cypress.env() in the developer tools it returns:

{
  IS_TRAVIS: true
}

I would expect it to instead return this based on the docs:

{
   IS_TRAVIS: 'true'
}

Because the documentation does not mention that string values like “true” are parsed into boolean values.

[jennifer-shehane]

Hey @darellkoh, sounds great!

[jennifer-shehane]

I would likely put this in the Examples section showing an example of the usage above and saying something like:

We automatically normalize both the key and the value. Cypress will automatically convert values into Number or Boolean.