wrote a test for or() given two true values
added the lib and or
got the test to fail
got the first test to pass or(true, true) => true
got the second test to pass or(true, false) => true
got the third test to pass or(false, true) => true
got the fourth test to pass or(false, false) => true
added a then() then so a handler could be passed
modified all the tests to do or(...).then(fn);