title: How to choose variable to display in tooltip when using ggplotly?
body: <p>I have a simple data frame:</p>
  
  <pre><code>seq &lt;- 1:10
  name &lt;- c(paste0("company",1:10))
  value &lt;- c(250,125,50,40,40,30,20,20,10,10)
  d &lt;- data.frame(seq,name,value)
  </code></pre>
  
  <p>And I want to plot it this way:</p>
  
  <pre><code>require(ggplot2)
  ggplot(data = d,aes(x=seq,y=value))+geom_line() + geom_point()
  </code></pre>
  
  <p>Now I want to use plotly, mostly to be able, when mousing over a point, to get other information than the value, such as the company name. I try this :</p>
  
  <pre><code>require(plotly)
  ggplotly()
  </code></pre>
  
  <p>which get me a tooltip, but with only seq and value. I tried the option tooltip= but it's specified you can use the only variable describe in the aesthetic, and I don't use the name in my aes.</p>
  
  <p>Any solution? I saw I am not the first with this problem, but I haven't found answer working with ggplotly.</p>