Set public registry explicitly

[finn-orsini]

Fixes #39

Proposed Changes

Adds an .npmrc to point to the public registry

Types of changes

Put an x in the boxes that apply

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation Update (if none of the other choices apply)

Test Plan and Documentation

Tested locally adding a new package and making sure it did not resolve to any private registry