On executing 'dex-oracle.ruby2.1 -v my.test.apk' I'm getting:

Exception in thread "main" com.beust.jcommander.MissingCommandException: Expected a command, got my.test.apk
at com.beust.jcommander.JCommander.parseValues(JCommander.java:725)
at com.beust.jcommander.JCommander.parse(JCommander.java:304)
at com.beust.jcommander.JCommander.parse(JCommander.java:287)
at org.jf.baksmali.Main.main(Main.java:90)