docs: updating CHANGELOG.md with changes

Author: willmendesneto

CHANGELOG.md

@@ -7,6 +7,14 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 ## [Unreleased][]
 
+### Fixed
+
+- Adding `appearance` attribute to be checked via `ngOnChanges`
+
+### Updated
+
+- Updating examples with new features
+
 ## [2.9.0][] - 2021-02-19
 
 ### Added
@@ -404,7 +412,5 @@ Now we can define the animation we want to use in `<ngx-skeleton-loader>` compon
 [2.7.0]: https://github.com/willmendesneto/ngx-skeleton-loader/tree/v2.7.0
 [unreleased]: https://github.com/willmendesneto/ngx-skeleton-loader/compare/v2.8.0...HEAD
 [2.8.0]: https://github.com/willmendesneto/ngx-skeleton-loader/tree/v2.8.0
-
-
-[Unreleased]: https://github.com/willmendesneto/ngx-skeleton-loader/compare/v2.9.0...HEAD
-[2.9.0]: https://github.com/willmendesneto/ngx-skeleton-loader/tree/v2.9.0
+[unreleased]: https://github.com/willmendesneto/ngx-skeleton-loader/compare/v2.9.0...HEAD
+[2.9.0]: https://github.com/willmendesneto/ngx-skeleton-loader/tree/v2.9.0