fix some example and readme

bin/examples/range/main.cpp

@@ -0,0 +1,21 @@
+#include "hack/range/save_to_file.hpp"
+#include "hack/range/sort.hpp"
+#include "hack/logger/logger.hpp"
+
+auto main(int argc, char *argv[]) -> int
+{
+  std::vector<int> v { 4, 4, 6, 1, 4, 3, 2 };
+  std::forward_list<int> l { 8, 7, 5, 9, 0, 1, 3, 2, 6, 4 };
+
+  hack::range::sort(v);
+  hack::range::sort(l);
+
+  hack::log()(v);
+  hack::log()(l);
+
+  hack::range::save_to_file("/mnt/raid/projects/hack/hack/bin/examples/range/range.txt", v);
+  hack::range::save_to_file("/mnt/raid/projects/hack/hack/bin/examples/range/range.delemiter.txt", v, ":");
+
+  return 0;
+}
+

bin/examples/range/range.delemiter.txt

@@ -0,0 +1 @@
+1:2:3:4:4:4:6

bin/examples/range/range.txt

@@ -0,0 +1 @@
+1, 2, 3, 4, 4, 4, 6