Examples adjustments.

* French to English punctuation.
* Pong and Shader use fixed-sized windows now (especially on tiling
  window managers, the windows will be resized automatically, thus
  making the examples look and also behave weirdly).

examples/pong/Pong.cpp

@@ -27,7 +27,8 @@ int main()
     float ballRadius = 10.f;
 
     // Create the window of the application
-    sf::RenderWindow window(sf::VideoMode(gameWidth, gameHeight, 32), "SFML Pong");
+    sf::RenderWindow window(sf::VideoMode(gameWidth, gameHeight, 32), "SFML Pong",
+                            sf::Style::Titlebar | sf::Style::Close);
     window.setVerticalSyncEnabled(true);
 
     // Load the sounds used in the game

examples/shader/Shader.cpp

@@ -267,7 +267,8 @@ private:
 int main()
 {
     // Create the main window
-    sf::RenderWindow window(sf::VideoMode(800, 600), "SFML Shader");
+    sf::RenderWindow window(sf::VideoMode(800, 600), "SFML Shader",
+                            sf::Style::Titlebar | sf::Style::Close);
     window.setVerticalSyncEnabled(true);
 
     // Load the application font and pass it to the Effect class