Add exercise1 to repo so it works on gh code viewer.

src/1.getting_started/5.2.transformations_exercise1/transformations_exercise1.cpp

@@ -0,0 +1,34 @@
+int main()
+{
+    [...]
+    while(!glfwWindowShouldClose(window))
+    {
+        [...]        
+        // create transformations
+        glm::mat4 transform = glm::mat4(1.0f);
+        transform = glm::rotate(transform, (float)glfwGetTime(), glm::vec3(0.0f, 0.0f, 1.0f)); // switched the order
+        transform = glm::translate(transform, glm::vec3(0.5f, -0.5f, 0.0f)); // switched the order               
+        [...]
+    }
+}
+
+/* Why does our container now spin around our screen?:
+== ===================================================
+Remember that matrix multiplication is applied in reverse. This time a translation is thus
+applied first to the container positioning it in the bottom-right corner of the screen.
+After the translation the rotation is applied to the translated container.
+
+A rotation transformation is also known as a change-of-basis transformation
+for when we dig a bit deeper into linear algebra. Since we're changing the
+basis of the container, the next resulting translations will translate the container
+based on the new basis vectors. Once the vector is slightly rotated, the vertical
+translations would also be slightly translated for example.
+
+If we would first apply rotations then they'd resolve around the rotation origin (0,0,0), but 
+since the container is first translated, its rotation origin is no longer (0,0,0) making it
+looks as if its circling around the origin of the scene.
+
+If you had trouble visualizing this or figuring it out, don't worry. If you
+experiment with transformations you'll soon get the grasp of it; all it takes
+is practice and experience.
+*/