b methods: Documentation missing

This refers to #134.

Could you please add documentation templates for your new methods to `man-roxygen`? I have added a few trivial changes so that you can `roxygenize` on any platform. Please install the most current `roxygen2` from GitHub:

    library(devtools); install_github('roxygen', 'klutometis')

Please also commit the autogenerated `.Rd` files, and update the `NEWS` file, each as a separate commit.