Writing new ToC for the book

Author: spier

book/toc.md

@@ -22,6 +22,7 @@ Instead edit toc_template.md
 * [Common Requirements](../patterns/2-structured/common-requirements.md) - Common code in a shared repository isn't meeting the needs of all the project-teams that want to use it; this is solved through requirements alignment and refactoring.
 * [Communication Tooling](../patterns/2-structured/project-setup/communication-tooling.md) - An InnerSource project is being used outside the original development team but users are having trouble getting help and getting in touch with the project team. The idea is to set up and document standard communication tooling that allows for discussions to become visible, archived and searchable.
 * [Contracted Contributor](../patterns/2-structured/contracted-contributor.md) - Associates wanting to contribute to InnerSource are discouraged from doing so by their line management. Relief is provided by formal contracts and agreements.
+* [Core Team](../patterns/2-structured/core-team.md) - Even when an InnerSource project is widely needed, contributions and usage may be hindered because the project is difficult to work with. Establish a core team that is dedicated to take care of the project's fundamental items. Their work enables contributors to add and use the features that provide value to their scenarios.
 * [Cross-Team Project Valuation](../patterns/2-structured/crossteam-project-valuation.md) - It's hard to sell the value of cross-team InnerSource projects that don't provide a direct impact on company revenue. Here's a data-driven way to represent your project that both articulates its value and amplifies it.
 * [Dedicated Community Leader](../patterns/2-structured/dedicated-community-leader.md) - Select people with both communications and technical skills to lead the communities to ensure success in starting an InnerSource initiative.
 * [Gig Marketplace](../patterns/2-structured/gig-marketplace.md) - Establish a marketplace by creating an intranet website that lists specific InnerSource project needs as "Gigs" with explicit time and skill requirements.  This will enable managers to better understand their employee’s time commitment and professional benefits thereby increasing the likelihood of garnering approval to make InnerSource contributions.