Consider adding support for String input to File. methods
Consider a file called 'test.rb'
We can change its permission with File.chmod like so:
This should make it readable (world, group, owner)
and I believe it would be synonymous to
chmod +r test.rb
on the commandline.
In Ruby, this here does not work:
TypeError: no implicit conversion of String into Integer
Is there a reason why it must be an Integer? If Strings would
be allowed then we could also use those abbreviations like
'+r' just as we can with the commandline utility chmod.