AutumnPack

This update brings some bugfixes and texture tweaks.

• Changed Pack Description 2.8→2.9.1 (I forget to change the version number from 2.8 to 2.9, this is now fixed.
• Edited the Acorn Texture.
• Changed 'Acorn' & 'Pinecone' to 'Oak Acorn' & 'Spruce Pinecone'
• Slightly tweaked grammar errors in a splash text.