I (re?)learned a thing today: Vim can wget a site!
Doing c-w gf
tells Vim to open whatever path is under the cursor. This is usually something like "#include foo/bar/baz.h
. If you happen to have http://nicolasbrailo.github.io
under your cursor, you'll be fetching this site into a temp buffer, in Vim.
Bonus tip:
If c-w gf
isn't finding the files you want it to, you may need to set your search path:
set path+=/home/user/path/to/foo,/home/user/src/bar