Merge pull request graphql#1003 from graphql/add-easycla

Add EasyCLA instructions

Author: brianwarner

CONTRIBUTING.md

@@ -151,4 +151,14 @@ Interested in adding something not covered in this guide? Please [open an issue]
 
 If you run into any problems or have questions while contributing, you're always welcome to [open an issue](https://github.com/graphql/graphql.github.io/issues/new). 
 
-You can also ping our team in the [#website channel on the GraphQL Slack](https://graphql.slack.com/messages/website/). [Get your invite here!](https://graphql-slack.herokuapp.com/) 
+# Opening a PR to contribute your code
+
+You can also ping our team in the [#website channel on the GraphQL Slack](https://graphql.slack.com/messages/website/). [Get your invite here!](https://graphql-slack.herokuapp.com/)
+
+This repository is managed by EasyCLA. Project participants must sign the free ([GraphQL Specification Membership agreement](https://preview-spec-membership.graphql.org) before making a contribution. You only need to do this one time, and it can be signed by [individual contributors](http://individual-spec-membership.graphql.org/) or their [employers](http://corporate-spec-membership.graphql.org/).
+
+To initiate the signature process please open a PR against this repo. The EasyCLA bot will block the merge if we still need a membership agreement from you.
+
+You can find [detailed information here](https://github.com/graphql/graphql-wg/tree/main/membership). If you have issues, please email [[email protected]](mailto:[email protected]).
+
+If your company benefits from GraphQL and you would like to provide essential financial support for the systems and people that power our community, please also consider membership in the [GraphQL Foundation](https://foundation.graphql.org/join). 

README.md

@@ -20,3 +20,11 @@ The site is deployed via Netlify on merges to the source branch, you can see the
 
 ## How to contribute
 Check out our [contributing guide](./CONTRIBUTING.md) for detailed instructions on how to make changes to the GraphQL website 🎉
+
+This repository is managed by EasyCLA. Project participants must sign the free ([GraphQL Specification Membership agreement](https://preview-spec-membership.graphql.org) before making a contribution. You only need to do this one time, and it can be signed by [individual contributors](http://individual-spec-membership.graphql.org/) or their [employers](http://corporate-spec-membership.graphql.org/).
+
+To initiate the signature process please open a PR against this repo. The EasyCLA bot will block the merge if we still need a membership agreement from you.
+
+You can find [detailed information here](https://github.com/graphql/graphql-wg/tree/main/membership). If you have issues, please email [[email protected]](mailto:[email protected]).
+
+If your company benefits from GraphQL and you would like to provide essential financial support for the systems and people that power our community, please also consider membership in the [GraphQL Foundation](https://foundation.graphql.org/join).