added license file as Brother did delete it on their homepage

PKGBUILD

@@ -3,7 +3,7 @@ license=('GPL' 'custom:Brother')
 arch=('i686' 'x86_64')
 pkgname=brscan4
 pkgver=0.4.8_1
-pkgrel=1
+pkgrel=2
 pkgdesc="SANE drivers from Brother for brscan4 compatible models"
 depends=('sane' 'libusb-compat')
 url="http://support.brother.com"
@@ -13,7 +13,7 @@ install=brscan4.install
 [ "$CARCH" = "x86_64" ] && pkg_md5sum="2c98ad8269b4634e099c67bb0532f5e3" || pkg_md5sum="2d4f2aa8cc89829d7a0821e94be3fc8c"
 
 source=("https://download.brother.com/welcome/$pkg"
-	"http://www.brother.com/agreement/English_sane/agree.html"
+	"agree.html"
 	mk-udev-rules)
 md5sums=($pkg_md5sum
 	 'ccffb9a6f6d436b21be25b0241068981'