Add documentation for gnu-utils

plugins/gnu-utils/README.md

@@ -0,0 +1,27 @@
+gnu-utils
+=========
+
+Allow to use an alternate set of coreutils ([GNU coreutils][1]).
+
+On some systems, such as Mac OS, the coreutils installed aren't the
+gnu-coreutils.  
+In this case it's possible to install GNU coreutils, allowing to access to GNU
+coreutils commands with a different prefix (ie: `gls` for `ls`).
+
+Some installers create, during the installation of GNU coreutils, an alternative
+folder containing the same commands with a "vanilla name" (actually `ls`).
+This allows to add the said folder to `PATH`.  
+This solution can be a problem if you only want the GNU coreutils commands
+inside your zsh session (and you want to run scripts that still use the original
+coreutils).  
+The _gnu-utils plugin_ takes care of that by "hashing" the commands instead of
+adding them to the `PATH`.
+
+Authors
+-------
+
+*The authors of this plugin should be contacted via the github bug tracker.*
+
+ - [Sorin Ionescu](/sorin-ionescu)
+
+[1]: http://www.gnu.org/software/coreutils/