The pattern library was a part Fullbridge's move to a more responsive and consistent design. It served as a guidance on usage and application for basic design elements.
Before the styleguide, we had many internal communication problems. Having a styleguide solved the problems by aligning the developers to build consistently, reuse code, and see all of our patterns in one place.
This styleguide was tailored to our specific needs. The ideas from this library are the 'greatest hits'; it was a living, learning library.