Updates pod spec file and removes .swift-version file

Author: serralvo

.swift-version

@@ -1,7 +1,7 @@
 Pod::Spec.new do |s|
 
   s.name         = "TextFieldCounter"
-  s.version      = "1.0.2"
+  s.version      = "1.0.3"
   s.summary      = "UITextField character counter with lovable UX 💖. No math skills required 🙃."
   s.description  = <<-DESC
 		   Set max length of UITextField,
@@ -18,6 +18,7 @@ Pod::Spec.new do |s|
   s.platform     = :ios, "8.0"
   s.source       = { :git => "https://github.com/serralvo/TextFieldCounter.git", :tag => "#{s.version}" }
   s.requires_arc = true
+  s.swift_versions = "5.0"
 
   s.source_files  = "TextFieldCounter.swift"
   s.exclude_files = "TextFieldCounter"