Added plugin header, and refactored to look more like other libs
Refactored InvoiceParams class with properties. Changed KeyValuePair to Dictionary and other minor changes.
refactoring
Merge branch 'master' of github.com:unChaz/bitpay-csharp-api
fixed tests
merge with upstream
Merge pull request #5 from unChaz/master

added plugin version header and refactoring usage