Specify other PayPal API Options

This releases allows user to specify other PayPal API parameters for Express Checkout.

1.3.6: force locale to change gateway language (express checkout) (#51)

* force locale to change gateway language (express checkout)

1.3.5

fix #44 srmklive/laravel-paypal by @dpaniagua0 (#46)

Add feature to authorize, void or capture transactions

Add following features for ExpressCheckout API operation:

• DoAuthorization
• DoVoid
• DoCapture

1.3.3

Update ExpressCheckout.php

1.3.2

Add function check

1.3.1

Fix unexpected class error

Dynamically set api credentials

1.3.0

Dynamically set PayPal API Credentials

1.2.9: Merge pull request #29 from Jastkast/patch-1

Add qty

Dynamically set default currency

Dynamically set default currency by calling setCurrency method before any respective API methods.