Load zsh customizations from custom/zsh/before/* and custom/zsh/after/* instead of filename globbing [Close #79]

* File pattern globbing was too brittle. If you had plugins incorrectly
   named, or had only a before or after directory, things would break in
   nonobvious ways.

custom/zsh.sample/after/after.sample.zsh

@@ -0,0 +1,20 @@
+#
+# Samples of what you can do in *.after.zsh files.
+# You can create as many files as you like, or put everything in one.
+#
+
+# define your own aliases or override those provided by YADR.
+alias ls='ls -lAhFG'
+alias hosts='sudo vim /private/etc/hosts'
+
+
+# set or override options. two of my favorite are below.
+
+
+# Automatically cd to frequently used directories http://robots.thoughtbot.com/post/10849086566/cding-to-frequently-used-directories-in-zsh
+setopt auto_cd
+cdpath=($HOME/Dropbox/code)
+
+# Fancy globbing http://linuxshellaccount.blogspot.com/2008/07/fancy-globbing-with-zsh-on-linux-and.html
+setopt extendedglob
+