Option to use Vim wd as R wd
Merge pull request #99 from mdlerch/r_wd

Option to use Vim wd as R wd.
Minor change in documentation.
$VIMRPLUGIN_TMPDIR is preferentially created in $TMPDIR
Merge pull request #100 from tleonardi/master

$VIMRPLUGIN_TMPDIR is preferentially created in $TMPDIR
Recognize label error in Object Browser.
Use default tmp dirs (:h tempfile) on Windows too.
Fix vimrplugin_vim_wd with external terminals.
Update doc.
Improve r-plugin-nox section.