Added basic parameter tests
Test that the third parameter to the function is a reference to the array
Test that the range is fixed before the first iteration of some
Should return false if the array is empty
Should not visit items that are removed from the array before they've been visited
Check TypeError thrown on incorrect argument type
Test that some returns true at the point the callback returns true
Should return false if the callback never returns true
Added link to documentation in living draft
Merge pull request #129 from Financial-Times/arraysome_tests

Array.prototype.some tests