Merge pull request #3 from lefessan/master

Improve web page
Merge pull request #4 from lefessan/master

Small fix from Sylvestre
Add a list of potential warnings
Merge pull request #5 from Michaaell/master

Add a list of potential warnings
Add roadmap
Merge pull request #7 from Michaaell/master

Add roadmap
Add small descriptions
Merge pull request #8 from Michaaell/master

Add small descriptions
Added a documentation of warnings
Some additions to the warnings documentation
Add todonotes package
Change warnings management
Add W003
Add W004
Add W005
Add W007
Add W006
Improve location for W006
Add test for W001-W007
Fix warning for recurcive call