Node SDK copy edit (#15)

Author: kparr

README.md

@@ -48,8 +48,10 @@ Service Name | Import Path
 [VPC](https://cloud.ibm.com/apidocs/vpc?code=node) | ibm-vpc/vpc/v1
 
 ## Prerequisites
-* You need an [IBM Cloud][ibm-cloud-onboarding] account.
-* **Node.js >=10**: This SDK is tested with Node.js versions 10 and up. It may work on previous versions but this is not officially supported.
+* An [IBM Cloud][ibm-cloud-onboarding] account
+* Node.js >=10
+
+**NOTE:** This SDK is tested with Node.js versions 10 and up. Although the SDK might work on versions older than 10, previous versions are not officially supported.
 
 [ibm-cloud-onboarding]: http://cloud.ibm.com/registration
 
@@ -60,23 +62,21 @@ npm install ibm-vpc
 ```
 
 ## Using the SDK
-For general SDK usage information, please see
-[this link](https://github.com/IBM/ibm-cloud-sdk-common/blob/master/README.md)
+For general SDK usage information, see the
+[IBM Cloud SDK Common README](https://github.com/IBM/ibm-cloud-sdk-common/blob/master/README.md)
 
 ## Questions
-
-If you are having difficulties using this SDK or have a question about the IBM Cloud services,
-please ask a question at
-[Stack Overflow](http://stackoverflow.com/questions/ask?tags=ibm-cloud).
+If you have difficulties using this SDK or you have a question about the IBM Cloud services,
+ask a question at [Stack Overflow](http://stackoverflow.com/questions/ask?tags=ibm-cloud).
 
 ## Issues
 If you encounter an issue with the SDK, you are welcome to submit
 a [bug report](https://github.com/IBM/vpc-node-sdk/issues).
-Before that, please search for similar issues. It's possible someone has
-already encountered this issue.
+Before you create a new issue, search for similar issues. It's possible someone has
+already reported the problem.
 
 ## Open source @ IBM
-Find more open source projects on the [IBM Github Page](http://ibm.github.io/)
+Find more open source projects on the [IBM GitHub Page](http://ibm.github.io/)
 
 ## Contributing
 See [CONTRIBUTING](https://github.com/IBM/vpc-node-sdk/blob/master/CONTRIBUTING.md).