Error in YAML with R Markdown

Question

I have the following R Markdown script called test.Rmd:

---
params: 
  results: 
  value: !r mtcars
---

```{r setup, echo=FALSE, include=FALSE}         


        

Answer 1

1. Install the devtools package from CRAN.

2. In R, run the following:

   library(devtools)

   install_github('viking/r-yaml')