Changed pasting of files to be joined by a space rather than new line.

The functionality of Mac OS X's default terminal is to paste files joined by a space. This is for a very good reason.

Main uses include:
1. Pasting multiple files as arguments to rm to remove each file.
2. Pasting multiple files as arguments to other commands.

The only thing I can think of it being useful to paste with new lines are...
1. If you have a bunch of scripts which you want to run, you copy them and paste.

There is an easy workaround for this though. You can open a text editor, paste the files in there, copy and paste back into iTerm.