Update README.md

Sample trace (NFS) from Berkeley Auspex traces

adding NFS directory

fix for Python 3.2

old ref count fixed in README

add loop.s example, and correct jgt not jgte

some fixes to README to match current simulation

allotment bug fix, thanks Zhengguang Zhou

better default allotment of 10, not 1

added 0x where relevant

more clarity in help text

WAITING to BLOCKED to match book

Make it so root process cannot exit

Merge pull request #26 from stardustman/patch-1

fixed bug noted by Arun Rajan