Add missing podspec file (#18)

M3UKit.podspec

@@ -0,0 +1,18 @@
+Pod::Spec.new do |s|
+    s.name = 'M3UKit'
+    s.version = '0.8.1'
+    s.summary = 'Modern framework for parsing m3u files'
+    s.description = <<-DESC
+    A modern framework for parsing m3u files.
+    DESC
+    s.homepage = 'https://github.com/omaralbeik/M3UKit'
+    s.license = { :type => 'MIT', :file => 'LICENSE' }
+    s.authors = { 'Omar Albeik' => 'https://twitter.com/omaralbeik' }
+    s.module_name  = 'M3UKit'
+    s.source = { :git => 'https://github.com/omaralbeik/M3UKit.git', :tag => s.version }
+    s.source_files = 'Sources/**/*.swift'
+    s.swift_versions = ['5.5', '5.6', '5.7']
+    s.ios.deployment_target = '11.0'
+    s.osx.deployment_target = '10.13'
+    s.tvos.deployment_target = '11.0'
+end

README.md

@@ -125,7 +125,7 @@ The [Swift Package Manager](https://swift.org/package-manager/) is a tool for ma
 
 ```swift
 dependencies: [
-    .package(url: "https://github.com/omaralbeik/M3UKit.git", from: "0.8.0")
+    .package(url: "https://github.com/omaralbeik/M3UKit.git", from: "0.8.1")
 ]
 ```
 
@@ -140,15 +140,15 @@ $ swift build
 To integrate M3UKit into your Xcode project using [CocoaPods](https://cocoapods.org), specify it in your Podfile:
 
 ```rb
-pod 'M3UKit', :git => 'https://github.com/omaralbeik/M3UKit.git', :tag => '0.8.0'
+pod 'M3UKit', :git => 'https://github.com/omaralbeik/M3UKit.git', :tag => '0.8.1'
 ```
 
 ### Carthage
 
 To integrate M3UKit into your Xcode project using [Carthage](https://github.com/Carthage/Carthage), specify it in your Cartfile:
 
 ```
-github "omaralbeik/M3UKit" ~> 0.8.0
+github "omaralbeik/M3UKit" ~> 0.8.1
 ```
 
 ### Manually