Add a plugin.zsh file to be ZSH-framework friendly

plugin.zsh files will be automatically detected and loaded by ZSH frameworks.

Add one that adds the utilities folder to the user's `$PATH`.

Signed-off-by: Joe Block <[email protected]>

Author: unixorn

iterm2-shell-integration.plugin.zsh

@@ -0,0 +1,4 @@
+# Automagically add the utilities directory to $PATH
+
+PLUGIN_BIN="$(dirname $0)/bin"
+export PATH=${PATH}:${PLUGIN_BIN}