it would be nice to improve the examples from the manual

[aakhmetz]

Dear developers,

Thank you for quite useful package! Although, I wonder if you are planning to improve the readability of your manual? For example,

1. there is no real example of using binomial family for glm (I think it would be nice to provide the actual example, not just mentioning that one needs to use "cbind(successes, failures) ~ "
2. if I check the page on survival, there is an example on the bottom, but no explanation of it. http://mc-stan.org/rstanarm/reference/stan_jm.html What is logBili? Maybe you know it very well, but me, I don't have an idea. I think it could be more user-friendly if you provide more details