Made copyright notice more appropriate for an open source project

GBM/License/license.txt

@@ -1,5 +1,5 @@
-GBM - Game Backup Monitor 
-Copyright (C) 2019 Michael J. Seiferling
+Game Backup Monitor 
+Copyright (C) 2014 - 2019 Michael J. Seiferling and Game Backup Monitor contributors
 
 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

GBM/My Project/Resources.Designer.vb

@@ -79,7 +79,7 @@ Namespace My.Resources
         End Property
         
         '''<summary>
-        '''  Looks up a localized string similar to [PARAM] Michael J. Seiferling.
+        '''  Looks up a localized string similar to  2014 - [PARAM] Michael J. Seiferling and Game Backup Monitor contributors.
         '''</summary>
         Friend ReadOnly Property App_Copyright() As String
             Get

GBM/My Project/Resources.resx

@@ -137,7 +137,7 @@
     <value>This will rebuild all databases and shrink them to an optimal size.[BR]This should only be used if your gbm.s3db files are becoming very large.[BR][BR]Do you wish to continue?</value>
   </data>
   <data name="App_Copyright" xml:space="preserve">
-    <value>[PARAM] Michael J. Seiferling</value>
+    <value> 2014 - [PARAM] Michael J. Seiferling and Game Backup Monitor contributors</value>
   </data>
   <data name="frmMain_Exit" xml:space="preserve">
     <value>Are you sure you want to exit?  Your games will no longer be monitored.</value>