Added example 4 in examples directory.

examples/example_4/test/TestProductionCode2.c

@@ -0,0 +1,31 @@
+
+#include "ProductionCode2.h"
+#include "unity.h"
+
+/* These should be ignored because they are commented out in various ways:
+#include "whatever.h" 
+#include "somethingelse.h"
+*/
+
+void setUp(void)
+{
+}
+
+void tearDown(void)
+{
+}
+
+void test_IgnoredTest(void)
+{
+    TEST_IGNORE_MESSAGE("This Test Was Ignored On Purpose");
+}
+
+void test_AnotherIgnoredTest(void)
+{
+    TEST_IGNORE_MESSAGE("These Can Be Useful For Leaving Yourself Notes On What You Need To Do Yet");
+}
+
+void test_ThisFunctionHasNotBeenTested_NeedsToBeImplemented(void)
+{
+    TEST_IGNORE(); /* Like This */
+}