CORS block if run independently

[rodriguekayembe]

Should the documentation highlight that unless user of client has access to deployed omnivore app corsConfig this client can only be used in the scope of Ominivore apps or plugins.

`Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at https://api-prod.omnivore.app/api/graphql. (Reason: CORS header ‘Access-Control-Allow-Origin’ missing). Status code: 204.

Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at https://api-prod.omnivore.app/api/graphql. (Reason: CORS request did not succeed). Status code: (null).

Search error Error: NetworkError when attempting to fetch resource.
OmnivoreErrorBase errors.js:11
NetworkError errors.js:25
buildOmnivoreError errors.js:43
search client.js:33
client.js:34:24
search client.js:34`