Readme bundling with webpack detailing functionality lost

[mcshaz]

Thank you for this great library.

The Bundling with webpack header in the readme states it is worthwhile excluding astronomia and moment/locale dependencies from the build to minimise build size.

Would it be possible to add a couple of lines either in plain text or as comments in the example webpack config as to the downstream effects. For example something like (and clearly I have no idea of the consequences of excluding these 2 dependencies):

// exclude astronomia unless you need to support ???Turkish or ?? holidays
// excluding moment locale will mean all start and end date-times are given in local times on the computer running this library