title: shinyApp command in shiny package?
body: <p>I have installed shiny in RStudio running R 2.15.3.
  I load the package by <code>library(shiny)</code>
  But when I try to use shinyApp command I'll get the following </p>
  
  <pre><code>library(shiny)
  ui &lt;- fluidPage()
  server &lt;- function(input,output){}
  shinyApp(ui=ui,server=server)
  
  Error: could not find function "shinyApp"
  </code></pre>
  
  <p>And even when I'm trying to use R help by :</p>
  
  <pre><code>?shinyApp
  </code></pre>
  
  <p>the answer is :</p>
  
  <pre><code>No documentation for ‘shinyApp’ in specified packages and libraries:
  you could try ‘??shinyApp’
  </code></pre>
  
  <p>And it is very disappointing because this command is one of the essential commands that you need all time !</p>
  
  <p>I have to mention that the sample code I have tried to compile, is from official tutorial by shiny (shiny.rstudio.com/tutorial) ! So basically it should work.</p>
  
  <p>Can somebody help me on this please !</p>