Eliminate package warnings:
    - Temporary fix for missing documentation
    - Remove 'as.mle' usage
    - Remove dead code
    - Importance sampler cleanup
    - Importance sampler: sample confidence interval
    - Status of package check: 0 warnings + 4 notes
Remove final .so extensions in tmb_examples
Merge branch 'casper'
    Added multinomial PMF + Correctness check
Added information to README.md for installation on Mac OS 10.9 Mavericks because the fortran libraries on CRAN do not work in latest Mac OS
Merge pull request #34 from djhocking/master

Added information to README.md for installation on Mac OS 10.9 Mavericks...
minor doc changes
Merge branch 'master' into hans