Made Recommended Changes

Fixed missing hyphens
Fixed "so"
Added semi-colon to plotting statements
Clarified 1-D second-order hyperbolic PDEs
Made Recommended Changes

O(2) to O(Delta t^2)
Fixed O(Delta t^2)
Fixed error in discretized equation

Space discretization had delta t^2 instead of delta x^2
Merge branch 'master' of https://github.com/LTChaseJohnson/assignment-bank into LTChaseJohnson-master
Merge branch 'LTChaseJohnson-master'
Merge remote-tracking branch 'refs/remotes/origin/master'