Update output of v8 help in README.md
Update output of v8 help in README.md

The current version of README.md lists 3 commands. There are now 8 and more options to some of the commands, we should update it.
rnchamberlain/llnode,hhellyer/llnode,hhellyer/llnode,rnchamberlain/llnode,rnchamberlain/llnode,hhellyer/llnode,rnchamberlain/llnode,hhellyer/llnode