title: readr::read_csv issue: Chinese Character becomes messy codes
body: <p>I'm trying to import a dataset to RStudio, however I am stuck with Chinese characters, as they become messy codes. Here is the code: </p>
  
  <pre><code>library(tidyverse)
  df &lt;- read_csv("中文,英文\n英文,德文")
  df
  # A tibble: 1 x 2
    `\xd6\xd0\xce\xc4`            `Ӣ\xce\xc4`
                 &lt;chr&gt;                  &lt;chr&gt;
  1 "&lt;U+04E2&gt;\xce\xc4" "&lt;U+00B5&gt;\xc2\xce\xc4"
  </code></pre>
  
  <p>When I use the base function read.csv, it works well. I guess I must do something wrong with encoding. But there are no encoding option in read_csv, how can I do this?</p>