Doc fix

I fixed a bunch of documentation issues. You'll need to update your roxygen too. 
There are several placeholders for @params that you'll need to flesh out before shipping to CRAN
I updated my bio in the README and also turned functions into fixed width code.

The R Core-approved way to deal with this is via `utils::globalVariables()`, despite Hadley considering this an atrocious hack. However, this is the R Core approved way to deal with this, `foo <- NULL` is no less hacky, and `?globalVariables` suggests implementation details will change and improve with future versions of R so let's get on the bandwagon.

Change this to;

```r
if(getRversion() >= "2.15.1")  utils::globalVariables("pollen.equiv")
```

we can drop the clause if @SimonGoring wants to make **neotoma** depend on a newer version of R than `2.15.1`?