This is a non-official tool for getting your API refresh-token to do automated trading via the TradeStation API.
Since TS uses OAuth, it can be tricky to obtain these tokens sine you need a web service running to listen for the callback from tradestation.
To get going, make sure your api-key and client secret is set in env.vars.
Run ./grab_or_refresh.sh. If you run this for the first time, it'll grab
your access and refresh tokens and store both in their respective .txt files.
On subsequent runs, it'll use your refresh token to fetch a new access token.