Week8 SlitScanMouseX

Adding Week8 SlitScan assignment.
Wekk8 SlitScanMultiple

Adding Slit Scan Multiple
Uploading Week 10 and 11

Week 10 and 11 Assignments
Week 9

Added Week 9 Assignment.
Merge pull request #45 from dmunky/gh-pages

Assignments 8, 9, 10, and 11