changelog

VERSION	DATE		COMMENTS
1.0	20/12/2016	initial version
1.1	20/12/2016	several minor code improvements
1.2	20/12/2016	remove all possible hardcoding, take one argument as the input file instead of 'commands.txt'
1.3	21/12/2016	set prompt as a variable, minor code improvements, added changelog
1.4	21/12/2016	added fast option and help function
1.5	22/12/2016	clean up code, added '< /dev/null' to the eval line to prevent ssh reading from stdin, keep prompt at the end, tested with a much more complex set of commands to create and test a swarm cluster