[ADF-1586] Added Core doc files (#2681)

* [ADF-1586] Added core doc files

* [ADF-1586] Added core doc files

docs/infinite-pagination.component.md

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+# Infinite Pagination component
+
+Adds "infinite" pagination to the component it is used with.
+
+![Infinite Pagination screenshot](docassets/images/InfPagination.png)
+
+## Basic Usage
+
+```html
+<adf-infinite-pagination
+    [pageSize]="pageSize"
+    [loading]="infiniteLoading"
+    (loadMore)="loadNextPage($event)">
+</adf-infinite-pagination>
+```
+
+### Properties
+
+| Name | Type | Default | Description |
+| --- | --- | --- | --- |
+| pagination | Pagination | `InfinitePaginationComponent.DEFAULT_PAGINATION` | Pagination object |
+| pageSize | number | `InfinitePaginationComponent.DEFAULT_PAGE_SIZE` | Number of items that are added with each "load more" event |
+| loading | boolean | false |  |
+
+### Events
+
+| Name | Description |
+| --- | --- |
+| loadMore | Emitted when the "Load More" button is clicked |
+
+## Details
+
+Pagination is the process of dividing a list into separate ranges or "pages" with a
+certain number of items each. This allows a long list to be delivered in manageable pieces
+rather than all at once. "Infinite" pagination means that there is no upper limit on
+the number of items that can be displayed visually; a single page is shown initially but
+the user can extend the list one page at a time by clicking a "Load More" button.
+
+The `loadMore` event is emitted when the button is pressed. It is passed a
+[Pagination](https://github.com/Alfresco/alfresco-js-api/blob/master/src/alfresco-core-rest-api/docs/Pagination.md)
+parameter which contains the details of the current page (the start offset of the
+page within the list to be shown, whether there are more items left to show, etc).
+
+See the [Pagination component](pagination.component.md) for more information about the alternative "finite" pagination scheme.
+
+<!-- Don't edit the See also section. Edit seeAlsoGraph.json and run config/generateSeeAlso.js -->
+<!-- seealso start -->
+## See also
+
+- [Document list component](document-list.component.md)
+- [Pagination component](pagination.component.md)
+<!-- seealso end -->