Merge pull request #6 from aflaxman/master

Some enhancements and bug fixes
Merge pull request #7 from aflaxman/master

ENH: make model.plot more complete, add example
Merge pull request #8 from aflaxman/master

ENH: add example of calculating mean and interval estimates for age-std prevalence
BUG: make predict_for work with old version pandas

now all tests should pass
Merge branch 'master' of github.com:ihmeuw/dismod_mr into add_license
ENH: add license
Merge pull request #9 from aflaxman/add_license

Add license