sharing: through a project url (encoding file contents in url) (#428)
sharing: through a project url (encoding file contents in url) (#428)

* sharing: through a project url (encoding file contents in url)

* adding import / export async methods

* lint: whitespace

switchinnovations/pxt,Microsoft/pxt,switch-education/pxt,playi/pxt,Microsoft/pxt,switchinnovations/pxt,switch-education/pxt,Microsoft/pxt,playi/pxt,Microsoft/pxt,switchinnovations/pxt,Microsoft/pxt,switch-education/pxt,playi/pxt,playi/pxt,switch-education/pxt,switch-education/pxt,switchinnovations/pxt