Merge pull request #3 from CarrieRider/Dev

Dev
Merge pull request #4 from amandagroccia/dev

Dev
Merge pull request #5 from CarrieRider/Dev

Heun's and Euler's Methods Compared
Merge pull request #4 from amandagroccia/dev

Dev
Heun's Updates
Huen's Updates Again
Merge pull request #6 from CarrieRider/Dev

Dev
Set up the huen's trial to use a vector of dt's.
Fixed a bug in the number of steps for the huen method example
Merge pull request #5 from amandagroccia/dev

Dev
Merge pull request #7 from amandagroccia/master

Changes to the presentation. First draft of the overall structure.
Merged Amanda's changes into the Dev branch
Merge pull request #6 from KellyBlack/Dev

Pulled Amanda's changes into the dev branch