Custom Integration

###Branch ak/yahoo_trade

###Integration The following code will launch the OAuth flow (use your deep link URL):

TradeItSDK.yahooLauncher.launchOAuth( 
    fromViewController: self, 
    withCallbackUrl: "tradeItExampleScheme://completeYahooOAuth")

When you receive the deep link, complete the OAuth flow like this:

TradeItSDK.linkedBrokerManager.completeOAuth(
    withOAuthVerifier: oAuthVerifier,
    onSuccess: { linkedBroker in
        TradeItSDK.yahooLauncher.launchOAuthConfirmationScreen( 
            fromViewController: self,
            withLinkedBroker: linkedBroker)
    }, onFailure: { errorResult in
        // Do something with the error. The SDK has code for generating UIAlertController instances from errors if you want to use our alerts. Lemme know and I can show you.
    }
)

And once a broker has been linked, the trading flow can be launched like this:

let order = TradeItOrder()
// Since you will be launching from a QSP screen with buy/sell buttons you can prepopulate symbol/action
order.symbol = "YHOO"
order.action = .buy
TradeItSDK.yahooLauncher.launchTrading(fromViewController: self, withOrder: order)