Add link to download the pdf manual in the doc
Add link to download the pdf manual in the doc

Ignore-this: 277c6f6a375313dd5643ae00013857fa

darcs-hash:20110412150302-0cb73-5d60da872ee31323eb35609eedd793f01c66e906

c-cube/lwt,mfp/lwt,ocsigen/lwt,gfxmonk/lwt,fdopen/lwt,janestreet/lwt-async,rgrinberg/lwt,janestreet/lwt-async,rgrinberg/lwt,rneswold/lwt,c-cube/lwt,fdopen/lwt,rgrinberg/lwt,rneswold/lwt,rneswold/lwt,ocsigen/lwt,ocsigen/lwt,mirage/lwt,c-cube/lwt,gfxmonk/lwt,rgrinberg/lwt,mirage/lwt,mfp/lwt