Fixed S3 method declarations.
The methods weren't working because I didn't declare the `x` in the first function call.  I think its fixed now, but RStudio doesn't give us tab completion anymore.
Merge branch 'master' of https://github.com/SimonGoring/neotoma
Fixed the roxygen exports.
+ turns out you need to include `#' @export` at the top of every function call.
Merge pull request #108 from SimonGoring/master

Fixed the problem with the new S3 methods.