Adds method to split and strip input config files.

This allows using triple quote variables specifying comma separated
files on different lines.
Modifies multiSplit to strip commas too.

Now commas can be used to separate entries, but are not required.
Merge branch 'pr_fix_multiline_config_files' of git://github.com/gradha/babel into gradha-pr_fix_multiline_config_files

Conflicts:
	readme.markdown