title: searchTwitter() R function not working as expected
body: <p>I'm trying to pull in tweets that feature the words "Deacs" and "basketball" for the time range 11/15/15 - 11/30/15. </p>
  
  <p>As the below Twitter website search reveals, such tweets certainly exist: 
  <a href="https://twitter.com/search?src=typd&amp;q=Deacs%20basketball%20since%3A2015-11-15%20until%3A2015-11-30" rel="nofollow">https://twitter.com/search?src=typd&amp;q=Deacs%20basketball%20since%3A2015-11-15%20until%3A2015-11-30</a></p>
  
  <p>I have set up the TwitteR package on my environment and have successfully pulled in 1000+ tweets in the past for a call. However, when I run the following code: </p>
  
  <pre><code>Dtweets1 &lt;- searchTwitter('deacs+basketball', n = 10, since = '2015-11-15', until = '2015-11-30')
  </code></pre>
  
  <p>I get the following error, and a List of 0:</p>
  
  <pre><code>Warning message:
  
  In doRppAPICall("search/tweets", n, params = params, retryOnRateLimit = retryOnRateLimit,  :  10 tweets were requested but the API can only return 0
  </code></pre>
  
  <p>Is there a particular reason this error is popping up?</p>