https://github.com/kubernetes/helm -> https://github.com/helm/helm
https://github.com/kubernetes/charts -> https://github.com/helm/charts



Signed-off-by: Roc Chan <roc@imroc.io>

The link to the issues page was giving a 404 due to a malformed URL.

This documentation was ripped from the Helm v2.2.0 release notes. I've referenced it enough times that
it should be placed somewhere in the documentation.

A piece of folk knowledge got lost somewhere along the way: Core
contributors should merge their own PRs.

This adds documentation for the developer workflow as approved in #2069

Closes #2069

Change from old Google CLA verbage to new CNCF CLA verbage. This text is
verbatim with Kubernetes' repo.

Closes #1885

Closes #662

Closes #840

This addresses issue #568.

This removes some unnecessary process details, removes some of the more
hierarchical/authoritarian elements, and adjust the language to reflect
a more open process.