Add directory documentation

modules/directory/README.md

@@ -0,0 +1,32 @@
+Directory
+=========
+Sets directory options and defines directory aliases.
+
+Options
+-------
+
+ - `AUTO_CD`, Auto cd to a directory without typing `cd`.
+ - `AUTO_PUSHD`, Push the old directory onto the stack on `cd`.
+ - `PUSHD_IGNORE_DUPS`, Don't store duplicates in the stack.
+ - `PUSHD_SILENT`, Do not print the directory stack after `pushd` or `popd`.
+ - `PUSHD_TO_HOME`, Push to home directory when no argument is given.
+ - `CDABLE_VARS`, Change directory to a path stored in a variable.
+ - `AUTO_NAME_DIRS`, Auto add variable-stored paths to `~` list.
+ - `MULTIOS`, Write to multiple descriptors.
+ - `EXTENDED_GLOB`, Use extended globbing syntax.
+ - `CLOBBER`, Don't overwrite existing files with `>` and `>>`. Use `>!` and
+`>>!` to bypass.
+
+Aliases
+-------
+
+ - `d`, Print the contents of the `directory` stack.
+ - `1` to `9`, Change directory to the `n` previous one.
+
+Authors
+-------
+
+*The authors of this module should be contacted via the github bug tracker.*
+
+ - [James Cox](/imajes)
+ - [Sorin Ionescu](/sorin-ionescu)