GH-542 Adding Podspec for Cordova library

Cordova.podspec

@@ -0,0 +1,32 @@
+Pod::Spec.new do |s|
+  s.name         = "Cordova"
+  s.version      = "5.1.0"
+  s.summary      = "Cordova for iOS"
+  s.homepage     = "https://github.com/apache/cordova-ios"
+  s.license      = { :type => "Apache 2.0", :file => "LICENSE" }
+  s.author       = { "Bharath Hariharan" => "bhariharan@salesforce.com" }
+  s.platform     = :ios, "11.0"
+  s.source       = { :git => "https://github.com/apache/cordova-ios.git",
+                     :tag => "{s.version}",
+                     :submodules => true }
+  s.requires_arc = true
+  s.default_subspec  = 'Cordova'
+  s.subspec 'Cordova' do |cordova|
+      cordova.source_files = 'CordovaLib/Classes/**/*.{h,m}', 'CordovaLib/Cordova/Cordova.h'
+      cordova.public_header_files = 'CordovaLib/Classes/Public/CDV.h', 'CordovaLib/Classes/Public/CDVAppDelegate.h', 'CordovaLib/Classes/Public/CDVAvailability.h', 'CordovaLib/Classes/Public/CDVAvailabilityDeprecated.h', 'CordovaLib/Classes/Public/CDVCommandDelegate.h', 'CordovaLib/Classes/Public/CDVCommandDelegateImpl.h', 'CordovaLib/Classes/Public/CDVCommandQueue.h', 'CordovaLib/Classes/Public/CDVConfigParser.h', 'CordovaLib/Classes/Public/CDVInvokedUrlCommand.h', 'CordovaLib/Classes/Public/CDVPlugin+Resources.h', 'CordovaLib/Classes/Public/CDVPlugin.h', 'CordovaLib/Classes/Public/CDVPluginResult.h', 'CordovaLib/Classes/Public/CDVScreenOrientationDelegate.h', 'CordovaLib/Classes/Public/CDVTimer.h', 'CordovaLib/Classes/Public/CDVURLProtocol.h', 'CordovaLib/Classes/Public/CDVUserAgentUtil.h', 'CordovaLib/Classes/Public/CDVViewController.h', 'CordovaLib/Classes/Public/CDVWebViewEngineProtocol.h', 'CordovaLib/Classes/Public/CDVWhitelist.h', 'CordovaLib/Classes/Public/NSDictionary+CordovaPreferences.h', 'CordovaLib/Classes/Public/NSMutableArray+QueueAdditions.h', 'CordovaLib/Classes/Private/Plugins/CDVUIWebViewEngine/CDVUIWebViewDelegate.h', 'CordovaLib/Cordova/Cordova.h'
+      cordova.prefix_header_contents = ''
+      cordova.requires_arc = true
+  end
+end
+
+#
+# ATTENTION: 
+#
+# This file needs to be updated manually whenever a Cordova upgrade is performed.
+# Sections that need to be updated:
+#   1. {s.version} should be the latest version of Cordova.
+#   2. {s.platform} should be updated if the minimum version of iOS has changed.
+#   3. {cordova.source_files} should be updated if the path of the library has changed.
+#   4. {cordova.public_header_files} should be updated, by removing the public headers
+#      that have been removed and adding the public headers that have been added.
+#