update library

Author: matscode

LICENSE

@@ -632,7 +632,7 @@ state the exclusion of warranty; and each file should have at least
 the "copyright" line and a pointer to where the full notice is found.
 
     {one line to give the program's name and a brief idea of what it does.}
-    Copyright (C) {year}  {name of author}
+    Copyright (C) 2019  Michael Akanji
 
     This program is free software: you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
@@ -652,7 +652,7 @@ Also add information on how to contact you by electronic and paper mail.
   If the program does terminal interaction, make it output a short
 notice like this when it starts in an interactive mode:
 
-    {project}  Copyright (C) {year}  {fullname}
+    Paystack SDK  Copyright (C) 2019  Michael Akanji
     This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
     This is free software, and you are welcome to redistribute it
     under certain conditions; type `show c' for details.

composer.json

@@ -17,7 +17,7 @@
     "stripe",
     "processor"
   ],
-  "license": "GNU GPLv3",
+  "license": "GPL-3.0",
   "minimum-stability": "dev",
   "autoload": {
     "psr-4": {