Add expectations in working with PMs

[dmleong]

[dmleong]

Links recommended by @benbalter:

• https://ben.balter.com/2016/06/06/twelve-things-a-product-manager-does/
• https://joshelman.medium.com/a-product-managers-job-63c09a43d0ec#.t7puifka7
• https://medium.com/all-things-product-management/product-manager-you-are-664d83ee702e#.6054jkko8
• https://medium.com/@bfgmartin/what-is-a-product-manager-ce0efdcf114c#.nfocpyput
• https://irishbryan.medium.com/product-managers-are-apes-21f25828dcb7#.ujgo9swh6
• https://medium.com/@noah_weiss/50-articles-and-books-that-will-make-you-a-great-product-manager-aad5babee2f7#.1t1kwhhly

[dmleong]

• Close partnership and trust is paramount for the health of the team
• PM focuses on gathering customer feedback and turning it into feature requests, voice of the customer, ensuring perfect is not the enemy of success
• EM focuses on team health, breaking down work, platform investments, career growth
• Together provide a prioritized roadmap that makes informed tradeoffs between platform investments and providing iterative customer value (neither can exist without the other)