Merge pull request #20 from lewenhagen/master

added interval.md
Merge pull request #21 from lewenhagen/master

created folder and 2 questions+answer
removed index.html and created separate testfiles in the labfolders. Plus more exercises.
Merge pull request #22 from lewenhagen/master

added more questions on lab 1
adding package.json to easy install htmlhint
Merge branch 'master' of github.com:mosbth/javascript1
adding command line utilities
added more exercises to lab 2
if this works, it is more exercises in lab 2