update to GPLv3 licence

exclude files from docker build context

update size description

exclude bundled dapp from container

console.log not needed within nodejs

sizes have changed

add description for solc in nodejs

add hints and npm package info

nodejs example with web3

added git, curl und web3 (npm)

description for dapps, host names and container linking

install solc with npm and added dummy-dapp-example

add bundled-dummy-dapp working with geth-node but not included in container

fix js path in bundled app

Based on CentOS 7