Merge pull request #6 from slayoo/master

obstacles section rewritten - just to provide some input, feel free to use in any way or simply discard
cleaning up description of case 3 in group 3
citep -> cite
Added Miguel's name to list of authors.
New section on HCI added
Typo
Update PunctualityAnalyst.java
fix author list
fix footnotes
More text for the Intro of the HCI part (group 4)
Added myself as an author
Grammar
Grammar
Muck around with the wording.

I think it's a bit easier to read this way. Feel free to revert this if
you don't like it...
Latex tweaks
Remove an hline

If you'd rather have the line present, can it at least have a bit of
extra vertical space below it?
More on group 2
add reference to Luke's recently submitted paper
update ref
typos and movement