Add the merge upstream details on lesson 5.
No need to have the match-up class.
Prepare lesson 7 and 8.
Added some float characteristics
Updated to reflect FEWD4 days
Introduce js events before the cash register example.
Merge branch 'gh-pages' of https://github.com/ga-students/FEWD_HK_4 into gh-pages
add startup matchmaker solution.
Add cash register solution.
Prepare lesson 9 and 10.
Fixed the anchor links in index.html.
Merge branch 'gh-pages' of https://github.com/ga-students/FEWD_HK_4 into gh-pages