Update version to 1.2.0

Author: devpolant

NativeUI.podspec

@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name          = "NativeUI"
-  s.version       = "1.1.0"
+  s.version       = "1.2.0"
   s.summary       = "Library that includes customizable replacements for native UIKit components"
 
   s.description   = <<-DESC

README.md

@@ -5,9 +5,9 @@
 
 # NativeUI
 
-## Requirements:
+## Minimum Requirements:
 - iOS 9.0
-- Xcode 11.0
+- Xcode 12.0
 - Swift 5
 
 ## Installation
@@ -16,15 +16,15 @@
 
 ```ruby
 target 'MyApp' do
-  pod 'NativeUI', '~> 1.1'
+  pod 'NativeUI', '~> 1.2'
 end
 ```
 
 If you don't need to connect all UI components you may use subspecs like:
 
 ```ruby
 target 'MyApp' do
-  pod 'NativeUI/Alert', '~> 1.1'
+  pod 'NativeUI/Alert', '~> 1.2'
 end
 ```