title: R markdown knit error read csv
body: <p>I'm new to using R markdownn and don't understand why this chunk works fine but fails when knit?</p>
  
  <p><code>{r echo=FALSE}
   
  dataframe  &lt;- read_csv("C:\\Users\\me\\downloads\\data\\data.csv")
   
  summary(dataframe)
   
   
  </code>
   
  Quitting from lines 21-30 (test_output.Rmd) 
  Error in read_csv("C:\Users\me\downloads\data\data.csv") : 
    could not find function "read_csv"
  Calls:  ... handle -> withCallingHandlers -> withVisible -> eval -> eval
  Execution halted</p>
  
  <p>Is it do with the where knit is looking in terms of its working directory?</p>
  
  <ul>
  <li>```{r echo=FALSE} but still outputting to created PDF</li>
  </ul>
  
  <p>Thanks</p>