Mongo v4.0.1 support

Version v4.0.1

Changed

• #10 Command ping was removed from mongo:lastest image, so all variables in script will not work.
• #14 During run of mongo-cnf-x it seems to be invalid rest option.
• #15 Support for replication protocol version 0 was removed in MongoDB 4.0.
• #16 MongoDB 4.0, you cannot specify --nojournal in replica set on wiredTiger engine
• #11 Update to latest stable mongo

v1.0.1

Small bufix release

• Chmods +x in scripts, revisited #8

v1.0.0

First major release.

Added

• Better support for healthchecks using plain mongo - #6
• Better handling mongo instances (--smallfiles)

Modified

• Rename in script - readability
• Chmods +x in scripts #7