- Add pulsar-config script that sets up a directory with server.ini
   file describing web process and app.yml describing Pulsar
   configuration..
 - Move run.sh into scripts and rename to just 'pulsar', modify behavior
   to target configuration files in current working directory or directory
   specified by -c/--config or PULSAR_CONFIG_DIR.
 - Add a new mode `--mode webless` to pulsar/run.sh that acts as an
   entry point into pulsar.main and starts pulsar without a webserver
   for MQ operation.
 - Move test/check.py into pulsar/clint/test/check.py so it is installed
   with pip. Add entry point so 'pulsar-check' is available after installing
   pulsar via pip/setup.py.