Fixed issue #53: added CONTRIBUTING.md
Fixed #42: renamed data to sample-data, adjusted README's accordingly
Fixed #45: making server.js more generic
Fixed #55: made all js/css paths absolute in index.html
Refined fix for #53: replace ref to Roxy list with Wiki and Stack reference
Merge pull request #54 from grtjn/issue-53-add-contrib

Fixed issue #53: added CONTRIBUTING.md
Merge pull request #59 from grtjn/issue-42-move-jsondata

Fixed #42: renamed data to sample-data, adjusted README's accordingly
Merge pull request #60 from grtjn/issue-45-ui-redirs-express

Fixed #45: making server.js more generic
Merge pull request #61 from grtjn/issue-55-use-abs-paths

Fixed #55: made all js/css paths absolute in index.html