added the 'mix local.hex' command to plugin completions
added the 'mix local.hex' command to plugin completions

tekniklr/oh-my-zsh,FrankSansC/oh-my-zsh,lightmanhk/oh-my-zsh,FrankSansC/oh-my-zsh,FrankSansC/oh-my-zsh,nunogt/oh-my-zsh,lightmanhk/oh-my-zsh,lightmanhk/oh-my-zsh,lightmanhk/oh-my-zsh,nunogt/oh-my-zsh,FrankSansC/oh-my-zsh,tekniklr/oh-my-zsh