Contrib themes

[pascalduez]

Just trying to keep track of contrib themes, review and possibly add them to the gallery:

https://github.com/pete-hotchkiss/sassdoc-theme-pheek

https://github.com/BiosSun/sassdoc-theme-winter
https://github.com/Veams/sassdoc-theme-veams
https://github.com/allanhortle/bruce-theme
https://github.com/LPLabs/sassdoc-theme-lonelyplanet
https://github.com/DigitalInnovation/sassdoc-theme-mns
https://github.com/CasperSleep/sassdoc-theme-nightshade
https://github.com/iamhexcoder/partsandlabor-sassdoc
https://github.com/TxHawks/sassdoc-theme-jigsass
https://github.com/ffoodd/sassdoc-theme-alix
https://github.com/rob-bar/sassdoc-theme-carrefour
https://github.com/Upstatement/sassdoc-theme-upbase
https://github.com/tf/sassdoc-theme-pageflow
https://github.com/ellioseven/sassdoc-theme-markdown
https://github.com/ellioseven/sass-theme-markdown
https://github.com/dfmcphee/sassdoc-theme-md
https://www.npmjs.com/package/sassdoc-theme-frankly
https://github.com/oddbird/sassdoc-theme-herman [WIP] #130
https://github.com/pascalduez/sassdoc-theme-literate [To release]
https://github.com/dbox/flippant [DONE]
https://github.com/ellioseven/sassdoc-theme-rest [DONE] [exclude from build tasks ?]