forked from I2P_Developers/i2p.i2p

- Explicitly specify shell when RUN_AS_USER is set. This allows I2P to start under limited accounts that do not have a defined shell. - When installing as a service, point out that I2P_CONFIG_DIR may need to be set. I2P_CONFIG_DIR defaults to $HOME/.i2p for the user that installed I2P and when running as a service this may not be desired. (e.g., RUN_AS_USER=i2p & I2P_CONFIG_DIR=/root/.i2p) (The RUN_AS_USER shell problem was spotted at https://github.com/mattias-ohlsson/i2p/blob/master/i2p.spec)