Starting on a recitation 10 note on templates, generics, etc
Time for office hours...
Working toward a recitation 10...
recit 10: friends + templates; other containers; iterators
Discussion on templates under the hood
Typo and style fixes
Added const ref discussion and finished op++
Merge pull request #1 from kaitlinhuben/chris-rec10

Typo fixes and a few additions to recitation 10