update quick ref vignette

[dongzhuoer]

1. Named[] should be Named() in last statement of "Create simple vectors" card, see Named[] should be Named() in quick ref vignette #929
2. glob.ls() need a bool argument in "Retrieve information from environment" section of "Environment" card, see glob.ls() need a bool argument #930
3. add definition for glob in Environment" card, see add definition for glob #931

[eddelbuettel]

Nice catch re glob. I think this would make sense:

R> cppFunction("CharacterVector foo() { Environment glob=Environment::global_env(); return glob.ls(true); }" )
R> foo()
[1] ".Random.seed" "foo"
R> 

So how about you prepare a new (single) PR with the three suggested changes as well as a ChangeLog entry with your name and email?

[eddelbuettel]

@dongzhuoer Are you going to prepare a new PR now that we settled on these three changes in one submission? Else I can make the change directly too. Let us know.

[dongzhuoer]

Sorry, I'm a graduate student. I was busy doing homework a few days ago.

I issue #933, we can discuss there.