added hex editor to recommended extensions in docs for viewing binary data files

Author: RandomFractals

README.md

@@ -83,6 +83,7 @@ Other extensions Geo Data Viewer 🗺️ replaces, enhances or supplements for w
 | [GistPad 📘](https://marketplace.visualstudio.com/items?itemName=vsls-contrib.gistfs) | VS Code extension for managing and sharing code snippets, notes and interactive samples using GitHub Gists |
 | [VSCode Map Preview](https://marketplace.visualstudio.com/items?itemName=jumpinjackie.vscode-map-preview) | VSCode extension for visually previewing geospatial file content (GeoJSON, KML, etc) on a map |
 | [Geo Tools](https://marketplace.visualstudio.com/items?itemName=SmartMonkey.geotools) | Geo Tools VSCode extension allows you to easily interact with geographical data |
+| [Hex Editor](https://marketplace.visualstudio.com/items?itemName=ms-vscode.hexeditor) | Allows Hex Editing inside VS Code |
 
 # Dev Log