everybody loves new lines
Make Post and Delete works, so rework return type

Make Post and Delete calls.
Split Get calls from actual HTTP manipulations.
Return map[string]interface{} when the API call return a dictionnary and
return []interface{} when returning list.
Remove unused struct
Allow basic authentication to the API service
Basic HTTP error handling
Remove args to GetAggregates, add GetAggregateSlice(limit,offset)
Add GetXxxSlice methods

Remove args in GetX calls, add a method with Slice when caller want
slice, so the general case is always the same, without arguments
Rename the constructor. Sorry for the breaking!