Converted Data Analysis from csv to yaml.
Converted Boot Camp and Open Intro from csv to yaml.
Update lesson.yaml
Merge pull request #28 from swirldev/csv2yaml

Convert old csv courses to yaml
add correct answer to vectors question per steve
Fixed error in slide reference, Lesson 2 Residuals.
add note about stem and leaf plot printing to console
Merge branch 'master' into devel