Added API for deleting single event

Author: Roman Baitaliuk

ClusterWS-Client-Swift.podspec

@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name             = 'ClusterWS-Client-Swift'
-  s.version          = '3.1.1'
+  s.version          = '3.1.2'
   s.summary          = 'Swift Client for ClusterWS'
   s.description      = 'Swift Client for ClusterWS - lightweight, fast and powerful framework for building horizontally & vertically scalable WebSocket applications in Node.js'
   s.homepage         = 'https://github.com/ClusterWS/ClusterWS-Client-Swift'

Sources/CWSEmitter.swift

@@ -10,6 +10,7 @@ import Foundation
 public typealias CompletionHandler = (Any) -> Void
 
 open class CWSEmitter {
+    
     private var mEvents: [(string: String, completion: CompletionHandler)] = []
 
     public func on(event: String, completion: @escaping CompletionHandler) {