Added tarjan algorithm, modified grf_base class, translated bellman-ford to java, changed topological sort and removed aciclicity test because it can be done with the topological sort
Added SegmentTree
Changed preject structure
Formulas de probabilidad anadidas a mates.tex
Added Point2D class and a convexHull implementation
Merge pull request #2 from Seyfel/master

Request
Merge branch 'master' of github.com:Sumolari/swerc-2014 into lluis