Update README and properly pass configuration parameters

Author: gr0

Logsene/Classes/Core.swift

@@ -40,16 +40,17 @@ public class LogsLocation {
         - appToken: Your Logsene application token.
         - type: The Elasticsearch type to use for all events.
         - receiverUrl: The receiver url (optional).
-        - maxOfflineMessages: The maximum number of messages (5,000 by default) stored while device is offline (optional).
+        - maxOfflineFileSize: The maximum size of a single file used for offline storage (optional, 100000 by default).
+        - maxOfflineFiles: The maximum number of files used for offline storage (optional, 10 by default).
         - automaticLocationEnriching: When set to true the library will automatically enrich log events with location of the user (optional, false by default).
         - useLocationOnlyInForeground: When set to true the location data will only be used when the application is in foreground (optional, true by default).
 */
-public func LogseneInit(_ appToken: String, type: String, receiverUrl: String = "https://logsene-receiver.sematext.com", maxOfflineMessages: Int = 5000, automaticLocationEnriching: Bool = false, useLocationOnlyInForeground: Bool = true) throws {
+public func LogseneInit(_ appToken: String, type: String, receiverUrl: String = "https://logsene-receiver.sematext.com", maxOfflineFileSize: Int = 100000, maxOfflineFiles: Int = 10, automaticLocationEnriching: Bool = false, useLocationOnlyInForeground: Bool = true) throws {
     var maybeError: Error? = nil
     DispatchQueue.once(token: Logsene.onceToken) {
         let client = LogseneClient(receiverUrl: receiverUrl, appToken: appToken, configuration: URLSessionConfiguration.default)
         do {
-            Logsene.worker = try Worker(client: client, type: type, maxOfflineMessages: maxOfflineMessages, automaticLocationEnriching: automaticLocationEnriching, useLocationOnlyInForeground: useLocationOnlyInForeground)
+            Logsene.worker = try Worker(client: client, type: type, maxOfflineFileSize: maxOfflineFileSize, maxOfflineFiles: maxOfflineFiles, automaticLocationEnriching: automaticLocationEnriching, useLocationOnlyInForeground: useLocationOnlyInForeground)
         } catch (let err) {
             NSLog("Unable to initialize Logsene worker: \(err)")
             maybeError = err

Logsene/Classes/Worker.swift

@@ -28,7 +28,8 @@ class Worker: NSObject {
     fileprivate var locationManager: CLLocationManager? = nil
     #endif
 
-    init(client: LogseneClient, type: String, maxOfflineMessages: Int, automaticLocationEnriching: Bool, useLocationOnlyInForeground: Bool) throws {
+    init(client: LogseneClient, type: String, maxOfflineFileSize: Int, maxOfflineFiles: Int, automaticLocationEnriching: Bool,
+         useLocationOnlyInForeground: Bool) throws {
         serialQueue = DispatchQueue(label: "logworker_events", attributes: [])
         #if os(watchOS)
         #else
@@ -37,7 +38,7 @@ class Worker: NSObject {
 
         // Setup buffer for storing messages before sending them to Logsene
         // This also acts as the offline buffer if device is not online
-        preflightBuffer = try FileStorage(logsFilePath: "sematextLogsStorage", maxFileSize: 100000, maxNumberOfFiles: 10)
+        preflightBuffer = try FileStorage(logsFilePath: "sematextLogsStorage", maxFileSize: maxOfflineFileSize, maxNumberOfFiles: maxOfflineFiles)
 
         self.client = client
         self.type = type

README.md

@@ -58,7 +58,10 @@ class AppDelegate: UIResponder, UIApplicationDelegate {
 }
 ```
 
-You can optionaly provide the `receiverUrl` parameter if you are using [Sematext Enterprise](https://sematext.com/enterprise), and `maxOfflineMessages` to configure how many messages are stored while device is offline (5,000 by default).
+Additional options are available:
+ - the `receiverUrl` parameter allows specifying the data reciver if you are using our EU location or [Sematext Enterprise](https://sematext.com/enterprise)
+ - the `automaticLocationEnriching` parameter enabled automatic enrichment of logs from the mobile application with location data
+- offline storage size can be configured by using the `maxOfflineFileSize` (100000 by default) and `maxOfflineFiles` (10 by default) parameters. The size of the offline storage will be equal to `maxOfflineFileSize` multiplied by `maxOfflineFiles`.
 
 **Note**: We highly recommend creating a write-only token in your application settings for use in your mobile apps.