More mature solution for #4

example/getting_started_library.cpp

@@ -49,6 +49,6 @@ int c_variable_name = 1;
 namespace my_namespace {
     std::string cpp_function_name(const std::string& param) {
         return param + " Hello from lib!";
-    };
+    }
 }
 

example/tutorial5/load_all.cpp

@@ -114,6 +114,7 @@ std::size_t plugins_collector::count() const {
 
 //[plugcpp_load_all
 int main(int argc, char* argv[]) {
+    BOOST_ASSERT(argc == 2);
     plugins_collector plugins(argv[1]);
 
     std::cout << "\n\nUnique plugins " << plugins.count() << ":\n";