Updated LPN description

Worked on description quite a bit. Up till Veg Transitions pretty good. Veg transitions currently just copied from LPM, need to be reviewed and compared to LPX.

	modified:   _LPN/LPN Draft Description.docx
Add LPN Succession Transitions file

Contains 3 worksheets: LPM, LPX, ASPW
Used to complete description/diagram

	new file:   _LPN/LPN Succession Transitions.xlsx