Workaround for problem with 0 length files
Update README.md

Fix information in readme: Shallow clones ARE fully functional in non-acient git.

Manpage says that you can push/pull to/from a shallow clone. You can also make further clones of it.
Adds missing `git fat status` line to README.md.
Merge of Xander
Merge remote-tracking branch 'nachoalonso/master'