initial commit
add examples directory
add image directory
move stuff to correct directories
add basic Makefile
consistent whitespace
sensible names for images
move chapter3 to seperate file
add comment on etoolbox package
add remark definition
rename files
indent and add labels
add license
rename images
some minor tweaks
wrong image name
align hline
Merge pull request #1 from kehoste/feature/chapter-one

Clean up the introduction, experiment with etoolbox  package
add style guide
use new formatting for prompts and code