Add heroshot to Useful Tools section

Author: Ondrej Machala

README.md

@@ -109,6 +109,7 @@
 * [TinyPNG](https://tinypng.com) - Smart PNG and JPEG image compression.
 * [Full Page Screen Capture](https://chrome.google.com/webstore/detail/full-page-screen-capture/fdpohaocaechififmbbbbbknoalclacl?hl=en) - The simplest way to take a full page screenshot of your current browser window.
 * [Awesome Screenshot: Screen Video Recorder](https://chrome.google.com/webstore/detail/awesome-screenshot-screen/nlipoenfbbikpbjkfpfillcgkoblgpmj?hl=en) - Screen Capture full page screenshot and recorder for screencast.
+* [Heroshot](https://github.com/omachala/heroshot) - Screenshot automation for documentation with visual element picker and theme-aware output.
 * [Readme Markdown Generator](https://github.com/kefranabg/readme-md-generator) - CLI that generates beautiful README.md files.
 * [Capture to a Gif](https://chrome.google.com/webstore/detail/capture-to-a-gif/eapecadlmfblmnfnojebefkbginhggeh) - Record content of pages to an animated gif picture from browser.
 * [Microsoft Word](https://www.microsoft.com/en/microsoft-365/word) - Spelling, grammar, and intelligent suggestions to assist you across documents, email, and on the web.