Use Eigen rather than geometric-tools when possible (WIP).
Use covariance-matrix-based method for initial capsule guess.
Use qhull rather than wildmagic.
Remove some warnings.
Use FD for now + fix Ipopt parameters.
Fix qhull usage + missing initialization on vector.
Fix Eigen computation of distances.
Add missing qhull file.
Fix Eigen computation + add test.
Update AUTHORS.
Update README.
Add Travis support.
[cmake] Synchronize.
Merge eigen branch.