Updates to README.

Author: rolivieri

README.md

@@ -231,7 +231,7 @@ breaker.run(commandArgs: "92827", fallbackArgs: (msg: "Something went wrong."))
 
 #### Basic Usage Constructor:
 ```swift
-CircuitBreaker(timeout: Int = 1000, resetTimeout: Int = 60000, maxFailures: Int = 5, bulkhead: Int = 0, callback: @escaping AnyFallback<C>, command: @escaping AnyFunction<A, B>)
+CircuitBreaker(timeout: Int = 1000, resetTimeout: Int = 60000, maxFailures: Int = 5, rollingWindow: Int = 10000, bulkhead: Int = 0, callback: @escaping AnyFallback<C>, command: @escaping AnyFunction<A, B>)
 ```
  * `timeout` Amount in milliseconds that your function should complete before the invocation is considered a failure. Default is set to 1000 milliseconds.
  * `resetTimeout` Amount in milliseconds to wait before setting to halfopen state. Default is set to 60000 milliseconds.
@@ -243,12 +243,12 @@ CircuitBreaker(timeout: Int = 1000, resetTimeout: Int = 60000, maxFailures: Int
 
 #### Advanced Usage Constructor:
 ```swift
-CircuitBreaker(timeout: Int = 1000, resetTimeout: Int = 60000, maxFailures: Int = 5, bulkhead: Int = 0, callback: @escaping AnyFallback<C>, commandWrapper: @escaping AnyFunctionWrapper<A, B>)
+CircuitBreaker(timeout: Int = 1000, resetTimeout: Int = 60000, maxFailures: Int = 5, rollingWindow: Int = 10000, bulkhead: Int = 0, callback: @escaping AnyFallback<C>, commandWrapper: @escaping AnyFunctionWrapper<A, B>)
 ```
  * `timeout` Amount in seconds that the request should complete before the invocation is considered a failure. Default is set to 1 second.
  * `resetTimeout` Amount in seconds to wait before setting to halfopen state. Default is set to 60 seconds.
  * `maxFailures` Number of failures allowed within `rollingWindow` before setting state to open. Default is set to 5.
-  * `rollingWindow` Time window in milliseconds where the maximum number of failures must occur to trip the circuit. For instance, say `maxFailures` is 5 and `rollingWindow` is 10000 milliseconds. In such case, for the circuit to trip, 5 invocation failures must occur in a time window of 10 seconds, even if these failures are not consecutive. Default is set to 10000 milliseconds.
+ * `rollingWindow` Time window in milliseconds where the maximum number of failures must occur to trip the circuit. For instance, say `maxFailures` is 5 and `rollingWindow` is 10000 milliseconds. In such case, for the circuit to trip, 5 invocation failures must occur in a time window of 10 seconds, even if these failures are not consecutive. Default is set to 10000 milliseconds.
  * `bulkhead` Number of the limit of concurrent requests running at one time. Default is set to 0, which is equivalent to not using the bulkheading feature.
  * `fallback` Function user specifies to signal timeout or fastFail completion. Required format: `(BreakerError, (fallbackArg1, fallbackArg2,...)) -> Void`
  * `commandWrapper` Invocation wrapper around logic to circuit break, allows user defined failures (provides reference to circuit breaker instance).