docs: updated screenshots in README.md

README.md

@@ -21,10 +21,10 @@ Feel free to create an issue/pr if you want to see anything else implemented.
 ## Screenshots
 Here is a preview of how lualine can look like.
 
-![normal](https://user-images.githubusercontent.com/41551030/103467902-06b44080-4d54-11eb-89db-6d3bebf449fa.png)
-![insert](https://user-images.githubusercontent.com/41551030/103467914-1764b680-4d54-11eb-9e3d-528d3568dce7.png)
-![visual](https://user-images.githubusercontent.com/41551030/103467916-23507880-4d54-11eb-804e-5b1c4d6e3db3.png)
-![command](https://user-images.githubusercontent.com/41551030/103467919-2ba8b380-4d54-11eb-8585-6c667fd5082e.png)
+![normal_cropped](https://user-images.githubusercontent.com/41551030/108650373-bb025580-74bf-11eb-8682-2c09321dd18e.png)
+![powerline_cropped](https://user-images.githubusercontent.com/41551030/108650377-bd64af80-74bf-11eb-9c55-fbfc51b39fe8.png)
+![signify_cropped](https://user-images.githubusercontent.com/41551030/108650378-be95dc80-74bf-11eb-9718-82b242ecdd54.png)
+![diagnostics_cropped](https://user-images.githubusercontent.com/41551030/108650381-bfc70980-74bf-11eb-9245-85c48f0f154a.png)
 ![replace](https://user-images.githubusercontent.com/41551030/103467925-32372b00-4d54-11eb-88d6-6d39c46854d8.png)
 
 Screenshots of all available themes are listed in [THEMES.md](./THEMES.md)