Merge pull request #29 from LauraHilliger/master

separating modules
Merge pull request #30 from LauraHilliger/master

added learning objectives to individual sessions
Merge pull request #31 from LauraHilliger/master

updated readme with new github urls
Merge pull request #35 from LauraHilliger/master

didn't send a pull on friday!
Merge pull request #36 from LauraHilliger/master

not sure