Added readme for the first example.

_examples/01_bad_sort/README.md

@@ -0,0 +1,24 @@
+## Example 1. Bad sort
+
+This example demonstrates the highlighting capabilities of scold.
+
+`inputs.txt` specifies the test cases for a program that sorts integers in ascending order. The test program, however, sorts integers as if they were strings -- in a lexicographical order.
+
+Run the example using:
+```
+$ go build bad_sort.go
+$ scold bad_sort
+```
+
+Or, since ver2.01a, you can just do
+```
+$ scold go run bad_sort.go
+```
+
+The output will look like this:
+
+![scold's output for example 1](output.png)
+
+1. Note that in the first test case there is a mismatch between 10 and 11, and, even though, the first characters (`'1'`) match, the numbers are highlighted fully.
+2. In the second test case, there is a mismatch between 20 and -20, but only the *sign* is highlighted.
+3. scold intentionally ignores presentation differences. The +0 and 00 seem different as strings, but truly *are* zeros, so no mismatch is found.