include Andrea's changes

includes Andrea's changes to appsec json

add roles

add "compiler" and "creator" roles to appsec json

add license

Add back license key "MIT" to appsec json

fix code typo & update metadata

• fix typo in all to jsonlite package in RFunction code
• update metadata in appsec json file
• update readme file

change input argument type from TEXT to STRING

change input argument type from TEXT to STRING

ER v1.0

initial EarthRanger Upload version