week 5 quiz and week 6 materials
fix slideshow link for wk 6
Merge pull request #4 from xmunoz/gh-pages

merge in latest content changes
Update office hours and add forum link
Added line about installing npm packages
Refactoring to allow for `table` collection to be instantiated multiple times through use of `table` directive
Semester tables can now be toggled. Lots of styling changes due to dropping in foundation and scss from other project.
Fixing issue where first click on a table header doesnt work
clearing json of semester two table