Clarify carryoverConcurrencyCount documentation (#100)

readme.md

@@ -102,7 +102,7 @@ The length of time in milliseconds before the interval count resets. Must be fin
 Type: `boolean`\
 Default: `false`
 
-Whether the task must finish in the given interval or will be carried over into the next interval count.
+If `true`, specifies that any [pending](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise) Promises, should be carried over into the next interval and counted against the `intervalCap`. If `false`, any of those pending Promises will not count towards the next `intervalCap`.
 
 ### queue