title: Failing to install Quantstrat
body: <p>I'm trying to install quantstrat package on Mac, but when I try</p>
  
  <pre><code>install.packages("quantstrat",repos="http://R-Forge.R-project.org")
  </code></pre>
  
  <p>I get this</p>
  
  <pre><code>package 'quantstrat' is available as a source package but not as a binary
  
  Warning in install.packages :
    package 'quantstrat' is not available (as a binary package for R version 3.1.3)
  </code></pre>
  
  <p>When I download the tar.gz file from <a href="https://r-forge.r-project.org/R/?group_id=316" rel="nofollow">here</a>
  and try to install it from R:</p>
  
  <pre><code>install.packages("path/quantstrat",repos = NULL, type="source")
  </code></pre>
  
  <p>I get</p>
  
  <pre><code>Warning in install.packages :
    installation of package 'path/quantstrat' had non-zero exit status
  </code></pre>
  
  <p>And when I try from Terminal</p>
  
  <pre><code>CMD INSTALL quantstrat_0.9.1669.tar.gz
  </code></pre>
  
  <p>I get</p>
  
  <pre><code>ERROR: dependencies ‘xts’, ‘TTR’, ‘blotter’, ‘FinancialInstrument’ are not available for package ‘quantstrat’
  </code></pre>