Changes in 1.0-1:

1. Wrote generic random deviate function which can use
unif_rand(), randomkit, and erand48.

2. Fixed up some documentation bugs and typos.

3. system command in model.cc no longer calls "rm" which
doesn't work on Windows.

Changes in 1.0-1:

1. No longer using erand48; using unif_rand() from R for
Windows compatibility.
