Update README.md

Format the headings

README.md

@@ -1,13 +1,13 @@
 SpaceSimulator
 ==============
 
-Introduction 
+## Introduction 
 
 The Space Simulator is an application that has been developed using the C++ language using the 
 GLUT and OpenGL libraries. The application responds to some user input. The goal of the application 
 was to simulate a universe (or a space if you will) and to display this with some simple graphics. 
 
-Classes 
+## Classes 
 
 The classes used in the project are as follows: 
   • Window 
@@ -32,19 +32,18 @@ The classes used in the project are as follows:
   • Coordinate 
     o Handles coordinates in the application. 
 
-User Input 
+## User Input 
 
 The application responds to some user input as listed here: 
   • The ‘+’ and ‘–‘-buttons zoom in and out, respectively. 
   • The ‘n’ button follows the next object in space(default is the sun) 
   • The ‘q’ button exits the application 
   • The delete button deletes the last object added into space. 
   • A left mouse click creates a planet at the pointers position with a speed relative to the press 
-    and release position difference. More objects can be created within the main function. Follow the guidelines given there, first create 
-    an object and then add it to the space to be displayed in. Multiple stars can be created (to a 
+    and release position difference. More objects can be created within the main function. Follow the guidelines given there,     first create an object and then add it to the space to be displayed in. Multiple stars can be created (to a 
     maximum of 8) which all will emit light. 
 
-Dependencies 
+## Dependencies 
 
 The program is displaying graphics using GLUT and therefore the GLUT files are needed. These can be 
 found in the ‘dependencies’ folder.