Add BookStack (Wiki)

README.md

@@ -765,6 +765,7 @@ See https://github.com/n1trux/awesome-sysadmin#web
 See also [Documentation Generators](#documentation-generators), [Wikimatrix](http://www.wikimatrix.org/), [Wiki Engines on WikiIndex](http://wikiindex.org/Category:Wiki_Engine), [List of wiki software on wikipedia](https://en.wikipedia.org/wiki/List_of_wiki_software), [Comparison of wiki software on wikipedia](https://en.wikipedia.org/wiki/Comparison_of_wiki_software).
 
   * [Blazekiss](https://github.com/ldleman/blazekiss) - BlazeKiss is a KISS-based wiki (Keep It Simple, Stupid) - simplicity and functionality comes before all. `PHP`
+  * [BookStack](https://www.bookstackapp.com/) - BookStack is a simple, self-hosted, easy-to-use platform for organizing and storing information. It allows for documentation to be stored in a book like fashion. ([Demo](https://www.bookstackapp.com/#demo), [Source code](https://github.com/ssddanbrown/BookStack)) `MIT` `PHP`
   * [Codex](https://github.com/codex-project/codex) - Codex is a simple file-based Markdown documentation platform built on top of Laravel. - `MIT` `PHP`
   * [commonplace](https://github.com/fredoliveira/commonplace) - A server for your markdown files. Give it a directory, and Commonplace gives you a url, pretty pages, and quick editing. `Ruby`
   * [Dokuwiki](http://www.splitbrain.org/projects/dokuwiki) - An easy to use, lightweight, standards-compliant wiki engine with a simple syntax allowing reading the data outside the wiki. All data is stored in plain files, therefore no database is required. - `GPL` `PHP`