recompute dict from stem words, not exactly the same thing it seems
count punctuation and elision correctly and do not add a last 0 column
so compute a new matrix.
really delete this last 0 column
keep track of raw results.
minor adjustments
write about methodology
report more results.
compile libsvm for ubuntu 64bits.
typo
more feature tweaking
Merge branch 'master' of github.com:daureg/wcpr13