node type / version is blank when web3.eth.coinbase isn't set

[cdetrio]

See the image:

This is caused when web3.eth.coinbase is not set, since node.js#L339 will return an error:

> web3.eth.coinbase
etherbase address must be explicitly specified
    at web3.js:3119:20
    at web3.js:6023:15
    at get (web3.js:5923:38)
    at <anonymous>:1:-1

PR #241 fixes this bug.

[gaiazov]

+1 it is annoying to have to set coinbase on nodes