Update screenshots in the readme.

Author: xStrom

CHANGELOG.md

@@ -125,6 +125,7 @@ This means that druid no longer requires cairo on macOS and uses Core Graphics i
 - Added new example for blocking functions. ([#840] by [@mastfissh])
 - Added a changelog containing development since the 0.5 release. ([#889] by [@finnerale])
 - Removed references to cairo on macOS. ([#943] by [@xStrom])
+- Updated screenshots in `README.md`. ([#966] by [@xStrom])
 
 ### Maintenance
 
@@ -215,6 +216,7 @@ This means that druid no longer requires cairo on macOS and uses Core Graphics i
 [#959]: https://github.com/xi-editor/druid/pull/959
 [#961]: https://github.com/xi-editor/druid/pull/961
 [#963]: https://github.com/xi-editor/druid/pull/963
+[#966]: https://github.com/xi-editor/druid/pull/966
 
 ## [0.5.0] - 2020-04-01
 

README.md

@@ -58,11 +58,9 @@ druid's existing functionality and widgets.
 
 ## Screenshots
 
-#### Linux
-[![calc.rs example](https://raw.githubusercontent.com/xi-editor/druid/screenshots/images/calc.png)](./druid/examples/calc.rs)
-[![custom_widget.rs example](https://raw.githubusercontent.com/xi-editor/druid/screenshots/images/custom_widget.png)](./druid/examples/custom_widget.rs)
-[![hello.rs example](https://raw.githubusercontent.com/xi-editor/druid/screenshots/images/hello.png)](./druid/examples/hello.rs)
-[![slider.rs example](https://raw.githubusercontent.com/xi-editor/druid/screenshots/images/slider.png)](./druid/examples/slider.rs)
+[![calc.rs example](https://user-images.githubusercontent.com/754881/82576269-5281f300-9b92-11ea-887b-1f61f1a2a8b0.png)](./druid/examples/calc.rs)
+[![flex.rs example](https://user-images.githubusercontent.com/754881/82576273-53b32000-9b92-11ea-8767-6688d2e184b4.png)](./druid/examples/flex.rs)
+[![custom_widget.rs example](https://user-images.githubusercontent.com/754881/82576272-531a8980-9b92-11ea-9dd1-89e01d1bbc8a.png)](./druid/examples/custom_widget.rs)
 
 ## Concepts