Make init method public to support programatical usage

Author: kpavankotesh

KWVerificationCodeView.podspec

@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name             = 'KWVerificationCodeView'
-  s.version          = '0.1.5'
+  s.version          = '0.1.6'
   s.summary          = 'A verification code view with validation.'
   s.description      = 'A customisable verification code view with built in validation. Can be used for one time passwords (OTPs), email verification codes etc.'
   s.homepage         = 'https://github.com/keepworks/kwverificationcodeview'