added the models I have
O
Merge branch 'master' into john

Conflicts:
	Process Book.ipynb
added the text models and combination book. Will add explanations tomorrow
O
Merge branch 'john' of https://github.com/atucker/cs109

Conflicts:
	Process Book.ipynb
trying to merge

Conflicts:
	Process Book.ipynb
Merge https://github.com/johnsturm/cs109

Conflicts:
	Process Book.ipynb
Merge https://github.com/johnsturm/cs109
Merge https://github.com/johnsturm/cs109
right before sleep
Merge pull request #14 from atucker/master

Adding my new models