Update data use policy and rate limiting documentation

docs/content/data-use-policy.md

@@ -1,6 +1,5 @@
 # NEON Data Use and Citation Policy
 
-For more information on NEON Data Use and Citation Policies visit our 
-[Data Guidelines and Policies](https://www.neonscience.org/data-samples/guidelines-policies) page.  
+NEON data products and sample data are licensed under a Creative Commons Attribution 4.0 International License ([CC-BY](https://creativecommons.org/licenses/by/4.0/)). For more information, visit the [Data Guidelines and Policies](https://www.neonscience.org/data-samples/guidelines-policies) page.
 
 <br />

docs/content/index.md

@@ -3,6 +3,15 @@
 ## **Introduction**
 The NEON Data API (Application Programming Interface) can be used to quickly access data as well as information about NEON's data products, samples, and sampling locations. It provides a simple means of constructing URLs or cURL statements that return information in a common machine-readable format, [JSON (JavaScript Object Notation)](https://json.org/json-en.html). 
 
+## **Authentication**
+You do not need to authenticate in order to explore information about NEON data or locations. However, if you will be using the APIs to download data products or sample data, or using the APIs intensively, then you will need to sign up for and use an [API Token](https://www.neonscience.org/resources/learning-hub/tutorials/api-token-setup). The endpoints this currently applies to are:
+
+  - /data (including /data/query and /releases/data)
+  - /samples
+
+## **Data Use Policy and Licensing**
+NEON data products and sample data are licensed under a Creative Commons Attribution 4.0 International License ([CC-BY](https://creativecommons.org/licenses/by/4.0/)). For more information, visit the [Data Guidelines and Policies](https://www.neonscience.org/data-samples/guidelines-policies) page.
+
 ## **R & Python packages**
 The neonUtilities packages are the easiest way to download and reformat NEON data.  
 

docs/content/rate-limiting.md

@@ -1,9 +1,18 @@
 # Rate Limiting
 
-To ensure the quality of NEON's data API and associated services, 
-the data APIs are subject to rate limiting. Limits are applied and tracked globally 
-across all endpoints. You do not need to authenticate in order to explore NEON data. However, if you 
-will be intensively using the APIs, then you should sign up for an [API Token](#api-tokens).  
+To ensure the quality of NEON's data API and associated services, API 
+endpoints are subject to rate limiting. Limits are applied and tracked 
+globally across all endpoints.  
+
+You do not need to authenticate in order to explore information about NEON 
+data or locations. However, if you will be using the APIs to download data 
+products or sample data, or using the APIs intensively, then you will need 
+to sign up for and use an 
+[API Token](https://www.neonscience.org/resources/learning-hub/tutorials/api-token-setup). 
+The endpoints this currently applies to are:
+
+  - /data (including /data/query and /releases/data)
+  - /samples
 
 !!! info
     NEON reserves the right to modify the rate limits at any time. 
@@ -12,8 +21,8 @@ will be intensively using the APIs, then you should sign up for an [API Token](#
 
 All limits consist of two factors:  
 
-  - A burst - the total number of requests that can be made in a short period of time 
-    independent of rate, and  
+  - A burst - the total number of requests that can be made in a short period 
+of time independent of rate, and  
   - a rate - the number of requests per second that can be made
 
 Once the burst amount is utilized in its entirety, you will still be able to make 
@@ -163,7 +172,7 @@ a per token basis with the following rate specification for the token's `rate` s
 
 |Scope|Burst|Rate|Identifier|
 |---|---|---|---|
-|`rate:public`|1000 requests|4 requests per second|Token|
+|`rate:public`|2000 requests|8 requests per second|Token|
 
 
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