Update the plugins managment. Add the function 'omz-plugin' (inspired from bash-it)

plugins/available/gulp/gulp.plugin.zsh

@@ -0,0 +1,29 @@
+#!/usr/bin/env zsh
+
+#
+# gulp-autocompletion-zsh
+#
+# Autocompletion for your gulp.js tasks
+#
+# Copyright(c) 2014 André König <andre.koenig@posteo.de>
+# MIT Licensed
+#
+
+#
+# André König
+# Github: https://github.com/akoenig
+# Twitter: https://twitter.com/caiifr
+#
+
+#
+# Grabs all available tasks from the `gulpfile.js`
+# in the current directory.
+#
+function $$gulp_completion {
+    compls=$(gulp --tasks-simple 2>/dev/null)
+
+    completions=(${=compls})
+    compadd -- $completions
+}
+
+compdef $$gulp_completion gulp