route bots to a custom route so we can seed them with seo friendly content via plug

Site.Plug.Bot.Seo

defmodule Site.Plug.Bot.Seo do
 import Plug.Conn

@doc """
This plug will route bots to a custom route so we can seed them with seo friendly content
requires (add to mix):  {:ua_inspector, "~> 0.13" } 
"""
@url     "/to_url"

def init(options), do: options

def call(conn, _options) do

    ua = conn.req_params["user-agent"]

    case UAInspector.bot? ua do
    _ -> do_redirect(conn, @url)
  end
  end
defp do_redirect(conn, nil), do: conn

defp do_redirect(conn, to) do
conn
|> Phoenix.Controller.redirect(to: to)
|> halt
end

end