remove tailing spaces
refactor nested logic to little shorter...
easier if structure
use continue to remove unneeded nest
comment end of loops
move small else up to first line
remove unneeded else nest after a possible exit()
early return for autoload
use "is_readable" vs "file_exists"
use class exists to control that the class was loaded
Merge pull request #69 from ClemensSahs/clean-up-code

WIP code optimizing