Fix CONF files to only connect to each other

This creates a PRIVATE testnet, where only your miners are generating blocks, and the hash rate of the whole tesetnet network is your own hash rate (difficulty will never scale beyond what's practical for you).
Fix make clean function to work properly
Change variable names to reflect Litecoin instead of Bitcoin

And use "S" for "Server" variables instead of "B"
Update README
Add convenience method to get the account address
README fix
Merge pull request #1 from MidnightLightning/master

Update to be a private network