preparing v2.2.0 release

- update version reference in README
- add header labels in documentation for easier linking

Update README with new upcoming version number

prepare new version release

increase version in README to 2.0.3

fix for image scroll improvement on small screens

now including more graphics

update Readme for new release v2.0.1

fix typo in documentation

re-add newline at eof in doxygen-awesome.css

fixed typos in Readme found by @nilsleiffischer

set new version number of upcoming release

Merge pull request jothepro#12 from jothepro/fix_code_indentation

fix code indentation