Vignettes of package actuar 
- actuar.pdf:
 -  Introduction to actuar
 - coverage.pdf:
 -  Complete formulas used by coverage
 - credibility.pdf:
 -  Credibility theory
 - lossdist.pdf:
 -  Loss distributions modeling
 - risk.pdf:
 -  Risk and ruin theory
 - simulation.pdf:
 -  Simulation of compound hierarchical models