update README
Merge pull request #4 from citypw/master

update README, thanks citypw
Steps to install Mempo, including Tor and Privoxy
Links to RSS and pastebin
script to show IP
lib to show json/litecoin
random blocks (coins). also downloads
mempo.rss and security issues
memposec added
Anchor ID for URL: http://mempo.org/#steps
Details for tor,privoxy,gpg