fix: README -> README.md

ta6ob/lz4/examples/printVersion.c

@@ -0,0 +1,13 @@
+// LZ4 trivial example : print Library version number
+// by Takayuki Matsuoka
+
+
+#include <stdio.h>
+#include "lz4.h"
+
+int main(int argc, char** argv)
+{
+	(void)argc; (void)argv;
+    printf("Hello World ! LZ4 Library version = %d\n", LZ4_versionNumber());
+    return 0;
+}