Updated Documentation
Merge branch 'develop' into feature/validation-codes
finished /validation end-point with tests. All pass. Updated docs
Added new method get_data() for each end-point. Split tests into separate if statements, included error msgs.
Added value_amount calculation; with tests for fixed and percentage
changed error return code to 400 - Bad request
Merge pull request #3 from westerncapelabs/feature/validation-codes

Updated Documentation and Validation codes