add assignments folder, ps1
remove file to be fixed
Merge pull request #2 from aerenchyma/add_assignments

Add assignments chapter
Assignments chapter and changes to toc
clean up; delete unused files and Lists and Strings chapters from pip
added bios.html
change Sk.config for python2.7 in the correct bookfuncs.js file
fixed bugs in Sequences chapter
added Iteration chapter
specialized Files chapter for this course
Merge pull request #3 from nickdotreid/pip

Added Section CRUD
added boiler plate controllers for adding sections
added "sections" model to db
added foreign key to sections table into auth_user
added output for list of sections into section_list
added simple view for sections list
added list of users in a section to section update list
removed word edit from section title
added basic form to add user email addresses
got form to search for emails from list and then add users that are matched