Adds a "Kill and Delete Cache" command to the sublime-gulp package for Sublime Text 3

custom_gulp_commands.py

import sublime
import sublime_plugin

class GulpDeleteCacheOnKill(sublime_plugin.WindowCommand):
    def run(self):
        self.window.run_command("gulp_kill")
        self.window.run_command("gulp_delete_cache")

custom_gulp_commands.sublime-commands

[
  {
    "caption": "Gulp: Kill and Delete Cache",
    "command": "gulp_delete_cache_on_kill"
  }
]