Fix broken headings in Markdown files

README.md

@@ -5,16 +5,16 @@ This is a companion repo for my [blog post on GPGPU computing on iOS](http://cie
 
 For the record, in the extreme case, the GPU performed **over 64 times** faster than CPU.
 
-##Requirements
+## Requirements
 
-####OpenGL ES 3.0 capable device
+#### OpenGL ES 3.0 capable device
 This basically boils down to A7 chip (iPhone 5s, iPad Air, Retina iPad mini).
 
-####iOS 7.1 
+#### iOS 7.1 
 While this code uses a new feature of OpenGL ES 3.0 (namely Transform Feedback) and the feature itself does work in iOS 7.0.x, it is somehow dysfunctional. Due to a [confirmed bug](https://devforums.apple.com/message/929561#929561) (Apple dev account required), shaders that contain and *call* user defined functions do crash when used for Transform Feedback. While I could manually inline the function's body into the source code, my implementation generates shaders with variable number of `in` and `out` vectors and having a single function to call made shader generator significantly easier to create. While I've tested the code on iOS 7.1 beta 2, it should work on beta 1 as well.
 
 Note, that if you are willing to write the shader manually or create a smarter shader generator that will not use user defined functions, you can make the code work on iOS 7.0.x.
 
-##Important
+## Important
 
 This application doesn't display anything, it merely runs calculations on the CPU and the GPU then prints the benchmark output to the console.