This is an update some typo fixes. 

I have also changed the MC Agenda "Make the world feel real in a cinematic way" into "Make the game feel like a superhero movie". For me, the word "cinematic" means it should be like a movie, in particular your standard blockbuster that is fast-paced, action-packed and often ignore the laws of physics for the sake of badassery. However, several people have told me that when they see "cinematic", they think of gritty realism instead. Hence I made the change to avoid confusion.