block linkedin and uol
Fix Update /etc/hosts routine

Updating websites was only writing "blocked" files to it, not pointing to localhost

* Write sed command that points all "blocked" websites to 127.0.0.1 (only when not already pointed)
* keep using exactly same script to write full "blocked" file (but now it prefixed IP)
* indent udpate script for better reading
* append to file routine doesn't need to prefix websites anymore:wq
Merge branch 'master' of github.com:brunops/focus