Add support for cpp files with test examples

Fix https://github.com/clearlinux/make-fmv-patch/issues/2

Signed-off-by: Victor Rodriguez <victor.rodriguez.bahena@intel.com>

tests/max-test.cpp

@@ -0,0 +1,36 @@
+#include <iostream>
+using namespace std;
+
+int max(int num1, int num2);
+void foo();
+
+int a[256], b[256];
+
+int main () {
+    foo();
+    return 0;
+}
+
+void foo(){
+
+    int i;
+    for (i=0; i<256; i++){
+        a[i] = 100;
+        b[i] = 200;
+    }
+
+    int ret;
+    for (i=0; i<256; i++){
+       ret = max(a[i], b[i]);
+       cout << "Max value is : " << ret << endl;
+    }
+}
+
+int max(int num1, int num2) {
+    int result;
+    if (num1 > num2)
+        result = num1;
+    else
+        result = num2;
+    return result;
+}