Add links into github example
Merge branch 'develop'
Add links to GitHub for second lesson
Correct mislabelled tag
Add ubuntu 13.04 specific instructions about boost.
Lesson 3 and appendix fix
Merge branch 'master' of github.com:UCL/rsd-cppcourse
Example for reaction not reactionsystem
Merge pull request #6 from UCL/develop

Example for reaction not reactionsystem
First draft of session 4 on file parsing
Merge branch 'master' of github.com:UCL/rsd-cppcourse