Remove leading "www." from rules

One downside to a rule using "www.example.com" is that "example.com"
won't be matched.

With "example.com" in the rule instead, Adblock Plus will automatically
match against "www.example.com" and other subdomains.
Sort rules alphabetically within categories

This makes it easier to edit the rules, especially once the list grows
large.
Convert README.md line endings from DOS to UNIX

UNIX line endings are the standard for most projects.
Tidied readme.md