Merge pull request #6 from Tokanagrammar/0.5.1-SNAPSHOT

upload downloadable for 0.5.1-SNAPSHOT built on Wed 04/10/2013 at  2:04:...
add a download section in homepage
Update index.html
Update download.html
upload downloadable for 0.5.1-SNAPSHOT built on Thu 04/11/2013 at  4:49:20.85