Add bf cli build spec (#864)

* Add bf cli build spec

* Update release-streams

* Update release-streams

* Rename release-streams to release-streams.md

Author: munozemilio

specs/release-streams.md

@@ -0,0 +1,57 @@
+# Daily Build Propsal for Botframework CLI
+
+This proposal describes our plan to publish daily builds for consumption. The goals of this are:
+1. Make it easy for developers (1P and 3P) to consume our daily builds. 
+2. Exercise our release to NPM process frequently, so issues don't arise at critical times. 
+3. Meet Developers where they are.
+
+Use the [Typescript Team](https://www.npmjs.com/package/typescript) as inspiration, and draft off the work they do. 
+
+# Versioning
+
+The tags we use for preview versions are:
+* -preview.<yyyymmdd>
+* -rc.{0}
+
+Note: use of "." rather than "-" to follow semver2 sorting rules. 
+
+# Daily Builds
+Copying what the typescript team does, all our NPM packages would be pushed with the next tag to NPM on a daily basis at 2am . 
+Build will be done from master. And triggered only once a day
+
+This means developers could install the cli by running
+
+```
+npm i -g @microsoft/botframework-cli@next
+```
+
+# RC Builds
+Copying what the typescript team does, all our NPM packages would be pushed with the rc tag to NPM manually triggered. 
+Build will be done from manually selected branch.
+Build should be the exact same as daily but with different triggers.
+
+This means developers could install the cli by running
+
+```
+npm i -g @microsoft/botframework-cli@rc
+```
+
+# Production Release
+Once RC is stable the production release will switch the tag from rc to latest.
+No new build is needed. Only re tagging latest RC
+
+This means developers could install the cli by running
+
+```
+npm i -g @microsoft/botframework-cli
+```
+
+# PR Builds
+Build should be the exact same as daily triggered on PR commits. No publish should be done.
+
+
+# Migration from MyGet
+
+1. Initially, our daily builds should go to both MyGet and Azure Devops. 
+2. Our docs are updated once builds are in both locations. 
+3. Towards the end of 2020, we stop publising to MyGet.