beatuify
fix
little fixes
docs
docs
Merge branch 'master' of https://github.com/horstjens/ThePythonGameBook

* 'master' of https://github.com/horstjens/ThePythonGameBook:
  Update 002_display_fps_pretty.py
  Update 004_per-pixel-alphademo.py
Merge branch 'master' of https://github.com/yipyip/ThePythonGameBook into yipyip-master
seltsame header konflikte händisch gelöst

* 'master' of https://github.com/yipyip/ThePythonGameBook:
  docs
  docs
  little fixes
  fix

Conflicts:
	pygame/002_display_fps_pretty.py
	pygame/004_per-pixel-alphademo.py
Merge branch 'yipyip-master'

* yipyip-master:
  docs
  docs
  little fixes
  fix