Updates manual publishing docs (#125)

* Update .npmrc

* merge npmrc

* merge npmrc

* update registry

* Update README.md

* typo

* Update .npmrc

Author: TheSonOfThomp

package.json

@@ -12,7 +12,8 @@
     "docs": "lg build-tsdoc"
   },
   "publishConfig": {
-    "access": "public"
+    "access": "public",
+    "registry":"https://artifactory.corp.mongodb.com/artifactory/api/npm/leafygreen-ui/"
   },
   "dependencies": {
     "@leafygreen-ui/emotion": "^4.0.7",