#15 added all constraints
#15 constraint interface added
#15 defined a bunch of constraints
#15 added blank, callback, choice and country validators
syntax error fixes
fix test runner, chain commands so if one fails the whole stops
move set of commandsof test runner file to travis file directly
install venus as global command in travis
reintroduced travis bash files as travis itself doesn't really run venus
force installation of venus 2.3.1 (2.3.2 is not working)
#15 fix Blank validator test
#15 added remaining validators
#15 typos
#15 added UT for constraint validator factory
#15 typos
#15 test the wrong choices object length
#15 fixed an error causing a valid date string to be flagged as violation
#15 forgot to pass the options object to the parent constructor
#15 removed ip v6 validation for now
#15 fixed test to check if value instance of a constructor