Added hide button indicator

Author: CosminPerRam

README.md

@@ -33,5 +33,5 @@ Although I can provide binaries only for Windows (and sometimes for Apple Silico
 *. Note: `openal32.dll` (from SFML's `bin` folder) is needed to be in the Debug/Release folder.
 
 ### Linux/MacOS - CMake
-*. You still need to do the steps `3, 7, 8, 9` from above.  
+*. You need to do the steps `3`, `7`, `8` and `9` from above.  
 Clone the repo and check out the cmake script. (Thanks [@ChrisTrasher](https://github.com/ChrisThrasher))

src/imguiInterface.cpp

@@ -51,6 +51,7 @@ void ImguiInterface::draw(sf::RenderWindow& window) {
 
 	if (ImGui::Button("Hide"))
 		Settings::General::showImgui = false;
+	Custom::HelpMarker("Press 'M' to hide/show this menu.");
 	ImGui::SameLine();
 	//if (ImGui::Button("Save"))
 	//	ImGui::OpenPopup("FileSavedPopup");