update readme for corp CLA language

changed CLA language for corporate to make more explicit as requirement

Author: sharrmander

README.md

@@ -116,7 +116,9 @@ Run the following gradle task:
 ### Contributing
 Full details are available in our [CONTRIBUTING.md](CONTRIBUTING.md) file.
 
-We'd love to get your contributions to improve AWS Lambda OpenTracing Java SDK! Keep in mind when you submit your pull request, you'll need to sign the CLA via the click-through using CLA-Assistant. If you'd like to execute our corporate CLA, or if you have any questions, please drop us an email at open-source@newrelic.com.
+We'd love to get your contributions to improve AWS Lambda OpenTracing Java SDK! Keep in mind when you submit your pull request, you'll need to sign the CLA via the click-through using CLA-Assistant. You only have to sign the CLA one time per project.
+
+To execute our corporate CLA, which is required if your contribution is on behalf of a company, or if you have any questions, please drop us an email at open-source@newrelic.com. 
 
 ### Licensing
 The AWS Lambda OpenTracing Java SDK is licensed under the Apache 2.0 License.