simply travis.yml
Merge remote-tracking branch develop into develop

Conflicts:
	.travis.yml
update stan submodule
script for jenkins
trying to fix an issue of index out of bounds with rcpp 0.10
Merge tag 'v2.1.0' into hotfix/index_out_of_bounds

Conflicts:
	rstan/rstan/inst/include/rstan/stan_fit.hpp
checkout .travis.yml in develop branch
udpate stan submodule
do not use name to access rcpp list
bump to version 2.1.1
fix a typo in rstan/inst/NEWS
Merge branch 'develop' of https://github.com/stan-dev/rstan into develop
Merge branch 'hotfix/index_out_of_bounds' into develop

Conflicts:
	rstan/rstan/inst/include/rstan/stan_fit.hpp
try to use call_placeholder as in Rcpp
udpate to 2.2.0
add version number to a c++ fun
fix issue 51
use static rcout/rceer
update rstan/inst/NEWS
only use 2 cores in vignette, which is the most allowed for --as-cran