Update README.md

Added Ambar to Search Engines. It's our second try, now Ambar fully open-source under MIT license

README.md

@@ -1082,6 +1082,7 @@ See https://github.com/n1trux/awesome-sysadmin#metric--metric-collection
 
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+- [Ambar](https://ambar.cloud) - Document Search Engine (OCR, Store & Search) ([Demo](https://app.ambar.cloud/), [Source Code](https://github.com/RD17/ambar)) `MIT` `Nodejs/Python`  
 - [Gigablast](http://www.gigablast.com/) - open source search engine. ([Demo](http://www.gigablast.com/), [Source Code](https://github.com/gigablast/open-source-search-engine)) `Apache-2.0` `C++`
 - [Seeks](https://beniz.github.io/seeks/) - Web search proxy and collaborative distributed tool for websearch. ([Source Code](https://github.com/beniz/seeks)) `AGPL-3.0` `C++`
 - [Searx](https://asciimoo.github.io/searx/) - Privacy-respecting, hackable metasearch engine. ([Demo](https://searx.me/), [Source Code](https://github.com/asciimoo/searx)) `AGPL-3.0` `Python`