up config file
minor
start working on #332
up preconditioner petsc interface :
 - add support // ilu with hypre/euclide and hypre/pilut package
 - add support for mulitgrid with hypre/boomeramg
 - continue refactoring
up Portfile :
 - petsc : add hypre package
 - slepc : up to 3.4.4
fix compilation
try to fix compilation
improve projects documentation - Doxygen
Take README.md into account in doxygen
Completely separate doc (example) and doc (doxygen documentation)
Separate doc and dox
Merge branch 'develop' of https://github.com/feelpp/feelpp into develop
up #332
fix display information
up preconditioner petsc :
 - add redundant pc
 - up ilu
Merge branch 'develop' of https://github.com/feelpp/feelpp into develop
Merge remote-tracking branch 'origin/develop' into feature/doc