pass allPages to itemRender

[zation]

So that I can use it to detect if current page is the last page

[coveralls]

Coverage remained the same at 71.357% when pulling e1e5dff on zation:master into 384fe99 on react-component:master.

[benjycui]

Nope, just:

const allPages
<Pagination itemRender={() => allPages} />

[zation]

@benjycui allPages is already calculated by Pagination, I don't want to write same code to calculate it again...

[benjycui]

Sorry, it's weirdo to let pagination tell you something you told it before.

[zation]

The calculation logic happens inside pagination. Users only tell pagination the total account and page size, but not the calculation logic. So I actually don't know what the allPages should be.

If pagination provides allPagesCalculator prop, it makes sense that pagination should not tell me what allPages is. But...

In another side, this will be more convenient to use itemRender and more consistent for allPages value.