Add new file for Decisions

Description copied off:
https://github.com/thegooddocsproject/governance/blob/master/ProjectSteeringCommittee.md

Author: viraji

decisions.md

@@ -0,0 +1,20 @@
+## The Good Docs Project Decisions
+
+### Criteria for Decision Making
+
+Decisions are based on voting using the following:
+
+    +1 : For
+    +0: Mildly for, but mostly indifferent
+    0: Indifferent
+    -0: Mildly against, but mostly indifferent
+    -1 : Strongly against. This is expected to be accompanied by a reason.
+
+For most decisions, a motion is raised within one of TheGoodDocsProject open forums (slack, email list, etc) and those present vote and decide. Should a decision:
+
+    Be strategic or impact many within TheGoodDocsProject,
+    Or if there is contention in deciding, and after discussion at least one member is still strongly against the motion, by continuing to vote -1,
+
+Then the motion should be referred to the PSC.
+
+For motions presented to the PSC, a motion is considered passed when there are more PSC +1 votes than -1 votes, and either all PSC members have voted, or 4 days have passed. In the case of a tie, the PSC chair shall have 1.5 votes.