[docs] Update fields listing (#25)

Author: elithrar

README.md

@@ -130,6 +130,7 @@ $ logshare-cli --api-key=<snip> --api-email=<snip> --zone-name=example.com --lis
   "CacheCacheStatus": "unknown | miss | expired | updating | stale | hit | ignored | bypass | revalidated",
   "CacheResponseBytes": "Number of bytes returned by the cache",
   "CacheResponseStatus": "HTTP status code returned by the cache to the edge: all requests (including non-cacheable ones) go through the cache: also see CacheStatus field",
+  "CacheTieredFill": "Tiered Cache was used to serve this request (beta)",
   "ClientASN": "Client AS number",
   "ClientCountry": "Country of the client IP address",
   "ClientDeviceType": "Client device type",
@@ -143,24 +144,29 @@ $ logshare-cli --api-key=<snip> --api-email=<snip> --zone-name=example.com --lis
   "ClientRequestURI": "URI requested by the client",
   "ClientRequestUserAgent": "User agent reported by the client",
   "ClientSSLCipher": "Client SSL cipher",
-  "ClientSSLProtocol": "Client SSL protocol",
+  "ClientSSLProtocol": "Client SSL (TLS) protocol",
   "ClientSrcPort": "Client source port",
   "EdgeColoID": "Cloudflare edge colo id",
   "EdgeEndTimestamp": "Unix nanosecond timestamp the edge finished sending response to the client",
   "EdgePathingOp": "Indicates what type of response was issued for this request (unknown = no specific action)",
   "EdgePathingSrc": "Details how the request was classified based on security checks (unknown = no specific classification)",
   "EdgePathingStatus": "Indicates what data was used to determine the handling of this request (unknown = no data)",
+  "EdgeRequestHost": "Host header on the request from the edge to the origin (beta)",
   "EdgeResponseBytes": "Number of bytes returned by the edge to the client",
   "EdgeResponseCompressionRatio": "Edge response compression ratio",
+  "EdgeResponseContentType": "Edge response Content-Type header value (beta)",
   "EdgeResponseStatus": "HTTP status code returned by Cloudflare to the client",
+  "EdgeServerIP": "IP of the edge server making a request to the origin (beta)",
   "EdgeStartTimestamp": "Unix nanosecond timestamp the edge received request from the client",
   "OriginIP": "IP of the origin server",
   "OriginResponseBytes": "Number of bytes returned by the origin server",
   "OriginResponseHTTPExpires": "Value of the origin 'expires' header in RFC1123 format",
   "OriginResponseHTTPLastModified": "Value of the origin 'last-modified' header in RFC1123 format",
   "OriginResponseStatus": "Status returned by the origin server",
   "OriginResponseTime": "Number of nanoseconds it took the origin to return the response to edge",
+  "OriginSSLProtocol": "SSL (TLS) protocol used to connect to the origin (beta)",
   "RayID": "Ray ID of the request",
+  "SecurityLevel": "The security level configured at the time of this request. This is used to determine the sensitivity of the IP Reputation system.",
   "WAFAction": "Action taken by the WAF, if triggered",
   "WAFFlags": "Additional configuration flags: simulate (0x1) | null",
   "WAFMatchedVar": "The full name of the most-recently matched variable",