starting command line interface for goss server.
Removed ext from the build.gradle file and added them to the
gradle.properties file.
Added --help and other required options to the common cli parser.
Added logging and the build tools version.
Added bintray url for buildtools.  Removed powergrid-core dependency.
Added loading of properties from configuration files.
included a sample-goss-core.properties file.
Updated log output to go to goss-server-log.log
Added ws uri to config file.
Modified line endings.
Added samples of configuration/propoerties.
Updated gossCoreversion to 0.1.7.
Removed unused portions of the build.