title: How to make Rcpp find a new module?
body: <p>After I successfully compiled a new Rcpp module (the example from "Exposing C++ functions and classes with Rcpp modules, Dirk Eddelbuettel Romain Francois")</p>
  
  <p>Following the instructions in the paper,</p>
  
  <pre><code>require( Rcpp )
  yada &lt;- Module( "yada" )
  </code></pre>
  
  <p>R complained about errors:</p>
  
  <pre><code>Error in FUN("_rcpp_module_boot_yada"[[1L]], ...) : 
      no such symbol _rcpp_module_boot_yada in package .GlobalEnv
  </code></pre>
  
  <p>I tried putting ''dyn.load("/path/to/yada.dll")'' before calling ''Module( "yada" )'', still the same error.</p>
  
  <p>There is very little info about the Rcpp's Module online. Does any known how to solve the problem? Should I put compiled module dll in some specifiec folder? </p>
  
  <p>The example code:</p>
  
  <pre><code>const char* hello( std::string who ){
    std::string result( "hello " ) ;
    result += who ;
    return result.c_str() ;
  }
  
  RCPP_MODULE(yada){
    using namespace Rcpp ;
    function( "hello", &amp;hello ) ;
  }
  </code></pre>