0.3.0

This version of the CoreOS iPXE boot server adds support for iPXE profiles which simplifies generating dynamic iPXE boot scripts. All the the HTTP parameters have been removed in favor of a single profile parameter that can be used to identify the iPXE profile.

The COREOS_IPXE_SERVER_LISTEN_HOST and COREOS_IPXE_SERVER_LISTEN_PORT have been removed in favor of a single COREOS_IPXE_SERVER_LISTEN_ADDR variable which defaults to `0.0.0.0:4777`

The COREOS_IPXE_SERVER_DATA_DIR is no longer required and will default to `/opt/coreos-ipxe-server`. The COREOS_IPXE_SERVER_BASE_URL is no longer required and will default to the host requested by the HTTP client.

Configuration settings now live in separate package.