Add back useFlexLayout and full-width-resizable-table example

docs/api/useAbsoluteLayout.md

@@ -25,6 +25,12 @@
   - **Usage Required**
   - This core prop getter is required to to enable absolute layout for rows cells
 
+### HeaderGroup Properties
+
+- `getHeaderGroupProps`
+  - **Usage Required**
+  - This core prop getter is required to to enable absolute layout for headers
+
 ### Header Properties
 
 - `getHeaderProps`

docs/api/useBlockLayout.md

@@ -19,6 +19,12 @@
   - **Usage Required**
   - This core prop getter is required to to enable absolute layout for rows cells
 
+### HeaderGroup Properties
+
+- `getHeaderGroupProps`
+  - **Usage Required**
+  - This core prop getter is required to to enable absolute layout for headers
+
 ### Header Properties
 
 - `getHeaderProps`

docs/api/useFlexLayout.md

@@ -0,0 +1,43 @@
+# `useFlexLayout`
+
+- Plugin Hook
+- Optional
+
+`useFlexLayout` is a plugin hook that adds support for headers and cells to be rendered as `inline-block` `div`s (or other non-table elements) with `width` being used as the flex-basis and flex-grow. This hook becomes useful when implementing both virtualized and resizable tables that must also be able to stretch to fill all available space.
+
+**NOTE:** Although no additional options are needed for this plugin to work, the core column options `width`, `minWidth` and `maxWidth` are used to calculate column and cell widths and must be set:
+
+- `minWidth` is only used to limit column resizing. It does not define the minimum width for a column.
+- `width` is used as both the `flex-basis` and `flex-grow`. This means that it essentially acts as both the minimum width and flex-ratio of the column.
+- `maxWidth` is only used to limit column resizing. It does not define the maximum width for a column.
+
+[See Column Options](#column-options) for more information on these options.
+
+### Row Properties
+
+- `getRowProps`
+  - **Usage Required**
+  - This core prop getter is required to to enable absolute layout for rows
+
+### Cell Properties
+
+- `getCellProps`
+  - **Usage Required**
+  - This core prop getter is required to to enable absolute layout for rows cells
+
+### HeaderGroup Properties
+
+- `getHeaderGroupProps`
+  - **Usage Required**
+  - This core prop getter is required to to enable absolute layout for headers
+
+### Header Properties
+
+- `getHeaderProps`
+  - **Usage Required**
+  - This core prop getter is required to to enable absolute layout for headers
+
+### Example
+
+- [Source](https://github.com/tannerlinsley/react-table/tree/master/examples/block-layout)
+- [Open in CodeSandbox](https://codesandbox.io/s/github/tannerlinsley/react-table/tree/master/examples/block-layout)