intro_cxx: typo

git-svn-id: http://svn.lal.in2p3.fr/projects/Enseignement/LAL-Info/trunk@3587 d5b9ce2a-b7ff-0310-b5dd-cb2f0fc3267d
svn: grammar/typo

git-svn-id: http://svn.lal.in2p3.fr/projects/Enseignement/LAL-Info/trunk@3588 d5b9ce2a-b7ff-0310-b5dd-cb2f0fc3267d
img-reading: be more explicit in that we want data members. not just new variables

git-svn-id: http://svn.lal.in2p3.fr/projects/Enseignement/LAL-Info/trunk@3589 d5b9ce2a-b7ff-0310-b5dd-cb2f0fc3267d
Merge branch 'master' of github.com:sbinet/npac-info into toto