Connect dots around SIG governance

Signed-off-by: Joe Beda <joe.github@bedafamily.com>

sig-governance.md

@@ -2,6 +2,7 @@
 
 In order to standardize Special Interest Group efforts, create maximum transparency, and route contributors to the appropriate SIG, SIGs should follow the guidelines stated below:
 
+* Create a charter and have it approved according to the [SIG charter process]
 * Meet regularly, at least for 30 minutes every 3 weeks, except November and December
 * Keep up-to-date meeting notes, linked from the SIG's page in the community repo
 * Announce meeting agenda and minutes after each meeting, on their SIG mailing list
@@ -13,16 +14,14 @@ In order to standardize Special Interest Group efforts, create maximum transpare
 * Use the above forums as the primary means of working, communicating, and collaborating, as opposed to private emails and meetings
 * Represent the SIG for the PM group - see [PM SIG representatives](/sig-product-management/SIG%20PM%20representatives.md).
 
-## SIG roles
-- **SIG Participant**: active in one or more areas of the project; wide 
-  variety of roles are represented
-- **SIG Lead**: SIG organizer
+[SIG charter process]: /committee-steering/governance/README.md
 
 ## SIG creation and maintenance procedure
 
 ### Prerequisites
 
-* Propose the new SIG publicly, including a brief mission statement, by emailing kubernetes-dev@googlegroups.com and kubernetes-users@googlegroups.com, then wait a couple of days for feedback
+* Work with the Steering Committee to scope the SIG and get provisional approval.
+  Follow the [SIG charter process] to propose and obtain approval for a charter.
 * Ask a repo maintainer to create a github label, if one doesn't already exist: sig/foo
 * Request a new [kubernetes.slack.com](http://kubernetes.slack.com) channel (#sig-foo) from [@parispittman](https://github.com/parispittman) or [@castrojo](https://github.com/castrojo).  New users can join at [slack.kubernetes.io](http://slack.kubernetes.io).
 * Slack activity is archived at [kubernetes.slackarchive.io](http://kubernetes.slackarchive.io).  To start archiving a new channel invite the slackarchive bot to the channel via `/invite @slackarchive`