bug fix in fos.
Add PrefixList tests
Merge pull request #45 from ortschun/master

Add PrefixList tests
Update README.md
Update README.md
changes to expose space information and update to web ui
changing disk used to disk free on web ui
formatting changes to UnderFileSystemHDFS file
Merge pull request #46 from achalsoni81/space_info

Space info
fix build
fix a deadline in masterinfo
remove hadoop test
Merge branch 'master' of https://github.com/amplab/tachyon into master-csd