devtools::install_bitbucket("richierocks/assertive.base") # install this one first! (other's depend on it) - then assertive.properties

these also need to be installed

devtools::install_bitbucket(c("richierocks/assertive.numbers", "richierocks/assertive.files", "richierocks/assertive.sets", "richierocks/assertive.matrices", "richierocks/assertive.models", "richierocks/assertive.reflection"))

then you can install

devtools::install_bitbucket("richierocks/assertive")