add 'gron'

- signed-off-by: trimstray <trimstray@gmail.com>

README.md

@@ -275,7 +275,8 @@ Only main chapters:
 &nbsp;&nbsp;:small_orange_diamond: <a href="https://jonas.github.io/tig/"><b>Tig</b></a> - text-mode interface for Git.<br>
 &nbsp;&nbsp;:small_orange_diamond: <a href="https://github.com/tldr-pages/tldr"><b>tldr</b></a> - simplified and community-driven man pages.<br>
 &nbsp;&nbsp;:small_orange_diamond: <a href="https://github.com/mholt/archiver"><b>archiver</b></a> - easily create and extract .zip, .tar, .tar.gz, .tar.bz2, .tar.xz, .tar.lz4, .tar.sz, and .rar.<br>
-&nbsp;&nbsp;:small_orange_diamond: <a href="https://github.com/tj/commander.js/"><b>commander.js</b></a> - minimal CLI creator in JavaScript.<br>
+&nbsp;&nbsp;:small_orange_diamond: <a href="https://github.com/tj/commander.js"><b>commander.js</b></a> - minimal CLI creator in JavaScript.<br>
+&nbsp;&nbsp;:small_orange_diamond: <a href="https://github.com/tomnomnom/gron"><b>gron</b></a> - make JSON greppable!<br>
 </p>
 
 #### GUI Tools &nbsp;[<sup>[TOC]</sup>](#anger-table-of-contents)