1. Updated 'auth-user-pass' to read login credentials from a file

2. Updated 'ca', 'cert', 'key' and 'tls-cert' to read from files to simplify future maintenance
3. Added default.ovpn pointing to United-Kingdom.ovpn
4. Updated README to include IronSocket in the list of supported providers

Original OVPN files sourced directly from IronSocket at https://ironsocket.com/network#ovpn

openvpn/ironsocket/ca.crt

@@ -0,0 +1,40 @@
+-----BEGIN CERTIFICATE-----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=
+-----END CERTIFICATE-----