Added enterprise option to the Fixer service

Merge pull request #53 from philperusse/master

Add an enterprise option for Fixer.io

1.2.0

Central Bank of Czech Republic historical exchange rates support

1.1.2

Fixing Fixer's new API error messages

1.1.1

Fixing Fixer's new API url

1.1.0

• added a deprecation notice about the Google service not very reliable
• added support for the new Fixer API (using an access key)

1.0.3

Fixed libxml issues on exception in the Google service

1.0.2

Fixes for the Google service

1.0.1

• NationalBankOfRomania supports historical conversions
• Added support for currency nominal in Russian Central Bank

First stable release

• Added Forge service
• Added CurrencyDataFeed service
• Supported historical rates in National Bank Of Romania

Crypto currencies support

Support crypto currencies via the Cryptonator service