Update README.md

Update main.js

bump version & add desc

Check if file exist before testing if it's a link

fix rename

Move serve and web3 to dependencies section

Move stdout to dependencies section

Add "exists" function 

 add resolveDirectory &  change sharedfolder `get` return value

Options to run geth, mist, frontend

 - start/stop geth/mist to the right ipc endpoint
 - start a frontend
 - automine if pending txs