make 'examples' plural

examples/path.cpp

@@ -0,0 +1,21 @@
+#include <vector>
+#include <string>
+#include <iostream>
+
+#include <tc/solver.hpp>
+#include <tc/groups.hpp>
+
+int main() {
+    auto cube = tc::group::B<3>();
+    auto vars = tc::solve(cube);
+
+    std::string start;
+    std::vector<std::string> names = {"a", "b", "c"};
+    auto words = vars.path().walk(start, names, std::plus<>());
+
+    for (const auto &word: words) {
+        std::cout << (word.empty() ? "-" : word) << std::endl;
+    }
+
+    return 0;
+}