Update 1.3.1 - Fix for Minecraft 1.11

Incompatible with Minecraft 1.11 and onwards due to updated pack_format
introduced with Minecraft 1.11. This issue has been fixed with RPCMC
update 1.3.1.

Update v1.3

+ Pack format (pre or post 1.9) is determined automatically (based upon
the selected mincraft.jar)
+ Users can select a preview image (pack.png) now
++ the default pack.png will no longer be included with the created
resource pack
+ Added tooltips to control all elements

v1.2.2 - Subfolder

Added the ability to specify a subfolder of the .minecraft-folder.
Reorganized countless form.Controls.Add into one form.Controls.AddRange.

Update 1.2.1 - Rename

1.2 - Select Minecraft jar

Added a combobox that allows the user, to select the minecraft jar that
will be used.

try, catch, delete

Moved the "extract jar"-part into a try-catch-structure, if the
extraction of the .jar fails, the (then useless) pack directory will be
deleted.

Update README.md

More Output

Added some Console.WriteLine (extracting jar, deleting files, done).