chore(grid): Update changelog and readme files #2734

CHANGELOG.md

@@ -49,7 +49,7 @@ For more detailed information, see the [README](https://github.com/IgniteUI/igni
     - A new boolean `hideGroupedColumns` input controls whether the grouped columns should be hidden as well (defaults to false).
     - **Breaking change** `cellClasses` input on `IgxColumnComponent` now accepts an object literal to allow conditional cell styling.
     - Exposing a mechanism for cells to grow according to their content.
-    - `sortStrategy` input exposed to provide custom sort strategy for the `igxGrid`. The custom strategy should implement the `ISortingStrategy` interface, or can extend the base `SortingStragey` class and override all or some of its public/protected members.
+    - `sortStrategy` input exposed to provide custom sort strategy for the `IgxColumnComponent`. The custom strategy should implement the `ISortingStrategy` interface, or can extend the base `SortingStragey` class and override all or some of its public/protected members.
 - `igxFor`
     - Added support for variable heights.
 - `igx-datePicker` selector is deprecated. Use `igx-date-picker` selector instead.
@@ -156,6 +156,11 @@ When you focus a specific cell and press one of the following key combinations,
 
 ## 6.1.8
 
+### General
+
+- `igxGrid`
+    - `sortStrategy` input exposed to provide custom sort strategy for the `igxGridColumnComponent`. The custom strategy should implement the `ISortingStrategy` interface, or can extend the base `SortingStragey` class and override all or some of its public/protected members.
+
 ### Bug fixes
 
 - Fix sorting and groupby expression not syncing when there are already sorted columns. #2786

projects/igniteui-angular/src/lib/grids/README.md

@@ -278,6 +278,7 @@ Inputs available on the **IgxGridColumnComponent** to define columns:
 |`field`|string|Column field name|
 |`header`|string|Column header text|
 |`sortable`|boolean|Set column to be sorted or not|
+|`sortStrategy`| Provide custom sort strategy to be used when sorting|
 |`editable`|boolean|Set column values to be editable|
 |`filterable`|boolean|Set column values to be filterable|
 |`hasSummary`| boolean  |Sets whether or not the specific column has summaries enabled.|