In "Fight the Zombie Pattern Library," presented at the Responsive Web Design Summit in 2016, we look at repeatable processes to implement Pattern Libraries in your product design and development workflow, so you can fight the slow rot of your interface design (and its underlying code) as your product grows and evolves.
These same processes can be used to "build a tiny Bootstrap" for every client and keep developers using them every day.
We also look at PatternPack (http://patternpack.org/), an open source tool for designing and building your interface, and then sharing the code. For more on getting started with PatternPack, check out the guides and resources (https://github.com/patternpack/patternpack/blob/master/docs/docs.md)