add README: installation/publishing

README.md

@@ -0,0 +1,18 @@
+# Installation/Publishing
+
+To install this package:
+
+```bash
+yarn config set '@torahanytime:registry' 'https://git.sakal.us/api/packages/brian/npm/'
+# or use `.yarnrc`:   echo '"@torahanytime:registry" "https://git.sakal.us/api/packages/brian/npm/"' >> .yarnrc
+# or use `.npmrc`:   echo '@torahanytime:registry=https://git.sakal.us/api/packages/brian/npm/' >> .npmrc
+yarn add @sakal/fsm
+```
+
+To publish a new version of this package:
+
+```bash
+yarn config set -- '//git.sakal.us/api/packages/brian/npm/:_authToken' "${GITEA_AUTH_TOKEN}"
+yarn login --scope sakal
+yarn build && yarn publish
+```