Completely rewritten introduction
Completely rewritten introduction

Refs #109

Please @mariosky @unintendedbear @fergunet take a look; it describes the approach and what we are going to do in the paper and introduces new references. It probably should be shorter, because there is a 10 page limit, divided thus

* 1 page: intro
* 1 page: SoA
* 2 pages: Description framework
* 3 pages: results
* 1 page: conclusion
* 2 pages: Acknowledgements and references.

the 10 page limit is hard to do...

JJ/modeling-volunteer-computing,JJ/modeling-volunteer-computing,JJ/modeling-volunteer-computing,JJ/modeling-volunteer-computing