Stop removing spaces from nvm_path

[stopsopa]

It brakes switching version of node through nvm in directories with space somewhere in it's path:
https://youtu.be/dW1cxfElF5U

I can't imagine why creator of this script is removing spaces from the path, maybe there is a reason for that but I don't know it, please review it then.

[ljharb]

That was done in #1865; @d4nyll, any idea why that was added?

[d4nyll]

@ljharb IIRC, the tr -d '[:space:]' was because pwd prints a newline character at the end.

$ pwd
/home/d4nyll
$ pwd | wc
      1       1      13
$ pwd | tr -d '[:space:]'
/home/d4nyll$ pwd | tr -d '[:space:]' | wc
      0       1      12

If it's messing up with paths that contains spaces, it'll probably be better to remove the newline character on this line.

[ljharb]

Seems reasonable to me. @stopsopa can you add that change?

[stopsopa]

I've updated pull request to trim newline character from path

[stopsopa]

Ekhm, It's ready to be reviewed again and possibly even merged.