update download link to v1.6

Author: madmalik

README.md

@@ -6,7 +6,7 @@ For a closer look [http://madmalik.github.io/mononoki/](http://madmalik.github.i
 
 ## Installation
 
-[Download mononoki.zip](https://github.com/madmalik/mononoki/releases/download/1.5/mononoki.zip) and unpack it.
+[Download mononoki.zip](https://github.com/madmalik/mononoki/releases/download/1.6/mononoki.zip) and unpack it.
 * [macOS](http://support.apple.com/kb/HT2509)
 * [Windows](http://windows.microsoft.com/en-us/windows-vista/install-or-uninstall-fonts)
 * Linux/Unix - distro dependent, I hope you know how to install it