There is no LICENSE.md file, but there is a LICENSE file.

Add an example for IgnoreFields. This resuses the test data from the example
in the cmp package to provide consistency between examples.

In Go1.16, the reflect.Type.NumMethod method will no longer report
unexported fields, matching the documented behavior on the method.
This means that t.NumMethod() == 0 is no longer a reliable means
to detect whether an interface type is the empty interface or not.
Fix the code to check whether the empty interface itself implements
the target type.

)

This reverts commit ab46b8b.
The upstream change in Go1.16 has been rolled back.
See golang/go#42123

The description inaccurately describes the operation of Diff,
which is y - x, where a '+' prefix denotes elements added from y
and a '-' prefix denotes elements removed from x.

For example:
	// Consider this call to Diff and its result.
	                  x  y
	cmp.Diff({b:2, c:3}, {a:1, b:2}) => {+a:1, b:2, -c:3}

	// Consider the same in mathematical notation.
	         y - x
	{a:1, b:2} - {b:2, c:3} = {+a:1, b:2, -c:3}