title: How to enable https support in twitteR?
body: <p>I am trying to connect to twitter using the twitteR package in R.  Script and results are below.  Running R 3.1.2 64 bit on windows 8.1.  Any suggestions about how to enable https?  I've not found a solution on R-help or any other searchable source.</p>
  
  <pre><code>require(twitteR)
  Loading required package: twitteR
  Loading required package: ROAuth
  Loading required package: RCurl
  Loading required package: bitops
  Loading required package: rjson
  &gt; cred &lt;- OAuthFactory $ new( consumerKey = my.key, consumerSecret = my.secret, requestURL =' https:// api.twitter.com/ oauth/ request_token', accessURL =' https:// api.twitter.com/ oauth/ access_token', authURL =' https:// api.twitter.com/ oauth/ authorize')
  &gt; cred$handshake(cainfo = "C:/users/john/documents/twitter/cacert.pem")
  Error in function (type, msg, asError = TRUE)  : 
    Protocol " https" not supported or disabled in libcurl
  </code></pre>