Updated client to allow for the parameterisation of response & request formats.
creation of json templates for order update methods
style changes
initial commission
Merge pull request #6 from Flubit/support-feed-error-report-endpoint

initial commission
Merge branch 'allow-for-the-parameterisation-of-request-and-response-formats' of https://github.com/Flubit/merchant-api-client.git into allow-for-the-parameterisation-of-request-and-response-formats
fix small issue.
Merge pull request #5 from Flubit/allow-for-the-parameterisation-of-request-and-response-formats

Allow for the parameterisation of request and response formats