added captureCookies flag documentation in creation new HAR REST API

Author: Vedant Seta

README.md

@@ -131,7 +131,7 @@ Once that is done, a new proxy will be available on the port returned. All you h
 Description |  HTTP method | Request path | Request parameters
 --- | :---: | :---: | ---
 Get a list of ports attached to `ProxyServer` instances managed by `ProxyManager` | GET | */proxy* ||
-<a name="harcreate">Creates a new HAR</a> attached to the proxy and returns the HAR content if there was a previous HAR. *[port]* in request path it is port where your proxy was started | PUT |*/proxy/[port]/har* |<p>*captureHeaders* - Boolean, capture headers or not. Optional, default to "false".</p><p>*captureContent* - Boolean, capture content bodies or not. Optional, default to "false".</p><p>*captureBinaryContent* - Boolean, capture binary content or not. Optional, default to "false".</p><p>*initialPageRef* - The string name of The first page ref that should be used in the HAR. Optional, default to "Page 1".</p><p>*initialPageTitle* - The title of first HAR page. Optional, default to *initialPageRef*.</p>
+<a name="harcreate">Creates a new HAR</a> attached to the proxy and returns the HAR content if there was a previous HAR. *[port]* in request path it is port where your proxy was started | PUT |*/proxy/[port]/har* |<p>*captureHeaders* - Boolean, capture headers or not. Optional, default to "false".</p><p>*captureCookies* - Boolean, capture cookies or not. Optional, default to "false".</p><p>*captureContent* - Boolean, capture content bodies or not. Optional, default to "false".</p><p>*captureBinaryContent* - Boolean, capture binary content or not. Optional, default to "false".</p><p>*initialPageRef* - The string name of The first page ref that should be used in the HAR. Optional, default to "Page 1".</p><p>*initialPageTitle* - The title of first HAR page. Optional, default to *initialPageRef*.</p>
 Starts a new page on the existing HAR. *[port]* in request path it is port where your proxy was started | PUT | */proxy/[port]/har/pageRef* |<p>*pageRef* - The string name of the first page ref that should be used in the HAR. Optional, default to "Page N" where N is the next page number.</p><p>*pageTitle* - The title of new HAR page. Optional, default to `pageRef`.</p>
 Shuts down the proxy and closes the port. *[port]* in request path it is port where your proxy was started | DELETE | */proxy/[port]* ||
 Returns the JSON/HAR content representing all the HTTP traffic passed through the proxy (provided you have already created the HAR with [this method](#harcreate)) | GET | */proxy/[port]/har* ||