make copy_redcap_code error looking for redcap plugins

[senrabc]

Following instructions here: http://redi.readthedocs.io/en/latest/test_sample_project_using_vagrant.html

gets following error

$ make copy_redcap_code
WARNING: did not find a REDCap plugins folder "../config-example/vagrant-data//redcap_plugins"
/usr/local/bin/redcap_records
cp ../config-example/vagrant-data//redcap.zip .
test ! -d ../config-example/vagrant-data//redcap_plugins || (cp -R ../config-example/vagrant-data//redcap_plugins/* plugins/)