Simplify update-servers.js

[garrettec1]

Remove target prompt.

Run startup after purchase

Run Share ( I suggest only 5% - 10% ram per server due to diminishing returns. )

Add logging

(~ maybe) ~ Set spend to always be 100%?

[RadicalZephyr]

• Switched to command line flags for all options.
• Added option to run start.js. default is to not do so.
• Spend percent defaults to 100%