Add documentation for utility

modules/utility/README.md

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+Utility
+=======
+Defines additional utilities functions.
+
+Functions
+---------
+
+ - `mkdcd`, Makes a directory and changes to it.
+ - `cdll`, Changes to a directory and lists its contents.
+ - `pushdll`, Pushes an entry onto the directory stack and lists its contents.
+ - `popdll`, Pops an entry off the directory stack and lists its contents.
+ - `slit`, Prints columns 1 2 3 ... n.
+ - `find-exec`, Finds files and executes a command on them.
+
+Aliases
+-------
+
+ - `http-serve`, Serves a directory via HTTP.
+ - `pmine`, Displays user owned processes status.
+
+Authors
+-------
+*The authors of this module should be contacted via the github bug tracker.*
+
+ - [Robby Russell](/robbyrussell)
+ - [Suraj N. Kurapati](/sunaku)
+ - [Sorin Ionescu](/sorin-ionescu)
+ - [Colin Hebert](/ColinHebert)