Updating to match the docs; however, note the docs at 
https://github.com/vitoshka/polymode
are out-of-sync with the implementation.
For example, the docs mention "R++C" which can't be right, 
i.e. isn't it "r+c++"?  e.g. ## -*- mode: poly-r+c++; -*-

Also note, that only the first argument to cppFunction is 
syntax highlighted.  This is not a bug, but ideally, 
the includes= literal would be highlighted.  By design,
Rcpp will often require source code besides #include 
statements present in the literal as can be seen in the 
runif.Rcxx example.


git-svn-id: https://svn.r-project.org/ESS/trunk@5521 0bbaf3bd-34e0-0310-bf65-c717079852d4