title: issues in installing Rstem package
body: <p>I was trying to install "sentiment" package, which requires the "Rstem" package. But the installation process failed due to the following error message,</p>
  
  <pre><code>install.packages("Rstem")
  Installing package(s) into ‘/home/user/R/x86_64-redhat-linux-gnu-library/2.14’
  (as ‘lib’ is unspecified)
  Warning message:
  In getDependencies(pkgs, dependencies, available, lib) :
    package ‘Rstem’ is not available (for R version 2.14.1)
  </code></pre>
  
  <p>May I know how to solve this issue? </p>