Added Zach's draft of the GMRES lab.
Merge branch 'master' into gmres
first edit pass
more editing and small style changes

cleaned up math expressions and punctuation.
Merge pull request #15 from ayr0/gmres

Small edits and styling
Merge branch 'master' into gmres
Merge branch 'master' into gmres
Added Zach as a contributor.
Clarified a formula in the Bézier curves lab.
Merge branch 'master' into gmres
Merge branch 'master' into splines
Merge branch 'master' into gmres
Merge branch 'master' into splines
Combined and moved files corresponding to the old complex integration
labs. They are now going to be a single lab on residues.
Various spacing fixes for the residues lab.
Added a new solutions file containing the solutions to the new problems
for the new residues lab.
Added a variety of plots to the second complex analysis lab.
Added rewritten version of partial fractions problem in residues lab.
Rewrote the section on using residues to evaluate difficult integrals.
Added a polynomial root counting problem to the residues lab.