Wildly quirky, wildly successful GitHub, builder of web-based collaboration tools for software developers, got its start with early employees writing code in dive bars, coffee shops and home offices. Given that this unconventional but agreeable culture helped build a $900 million company in just six years, F+M and Studio Hatch suggested recreating it within the company’s new 55,000-square-foot building. Every morning GitHubbers choose where they want to work: in one of two bars, several cafes, a library, a park, a speakeasy, a museum, a coder cave, or from home.