title: get rid of captions when using texreg in Rmarkdown
body: <p>How do you suppress captions for a texreg table? I'm using Rmarkdown to generate a LaTeX file. Here's a simple example:</p>
  
  <pre><code>```{r, echo=FALSE, message=FALSE, results="asis"}
  library(texreg)
  data &lt;- data.frame(a=c(1,2,3,4), b=c(6,3,4,4))
  texreg(lm(a~b, data=data), caption="", custom.note="", float.pos="h!")
  ```
  </code></pre>
  
  <p>The table I get has a caption on the bottom that says "Table 1:". How do I get rid of it? Thanks.</p>