mention Rcpp-attributes vignette in FAQ question 1

Author: eddelbuettel

ChangeLog

@@ -1,3 +1,7 @@
+2016-07-15  Dirk Eddelbuettel  <[email protected]>
+
+        * vignettes/Rcpp-FAQ.Rnw: Also point to Rcpp-attributes in Question 1
+
 2016-07-13  Dirk Eddelbuettel  <[email protected]>
 
         * NAMESPACE: Add import for glob2rx to please R CMD check

vignettes/Rcpp-FAQ.Rnw

@@ -77,13 +77,15 @@ require(highlight)
 
 If you have \pkg{Rcpp} installed, please execute the following command in \proglang{R}
 to access the introductory vignette (which is a variant of the \citet{JSS:Rcpp}
-paper) for a detailed introduction:
+paper) for a detailed introduction, ideally followed by at least the 
+Rcpp Attributes \citep{CRAN:Rcpp:Attributes} vignette:
 
 <<eval=FALSE>>=
 vignette("Rcpp-introduction")
+vignette("Rcpp-attributes")      
 @
 
-If you do not have \pkg{Rcpp} installed, the document should also be available
+If you do not have \pkg{Rcpp} installed, these documents should also be available
 whereever you found this document, \textsl{i.e.,} on every mirror of CRAN site.
 
 \subsection{What do I need ?}