Remove 'intially' from Abstract

Add notes
Add tab:Average-K and discuss
CW State what makes this paper unique
CW Minor edits
CW Replace 'Youngs modulus' with 'modulus of elasticity'
CW Rearrange bending stiffness methodology
Include mod. of elasticity data in Vogel exp. discussion
Update Vogel exp. values and minor edits
Increase dash length in fig:Vogel-exp
Replace 'flatter' and 'steeper' with approximate Vogel exp. values
Add fig:K-vs-volume and discuss