added initial documentation files for lab2
added a Person/HealthProfile example
updated lab session example code
added hints for solutions in code, new ignore file
updated java examples with guiding comments, added lab2 README guide
solution lab2/exercise1
solution lab2/ex2
updated lab2 readme
fixed links
Update README.md
lab2/Ex3 solution v1
updated version of HealthProfileReader
Merge branch 'master' of https://github.com/cdparra/introsde2013
Lab3 in-progress notes
moved example 1
moved example 1
added in-progress version of Example2
Update Sessions.md
lab2/Example2 updated description and buidl.xml
Merge branch 'master' of https://github.com/cdparra/introsde2013