Responsibilities:
-  make http req
-  GET
- MUST SUPPORT QUERY PARAMS
 
-  POST
- METHOD POST WITH DATA BODY, MUST SUPPORT QUERY PARAMS
 
-  PATCH
- METHOD PATCH WITH DATA BODY
 
-  DELETE
- METHOD DELETE, NO BODY
 
 
-  GET
- returns promise with response [status, header, body] to caller
- know enough to authenticate
-  create default headers
- create interface: addDefaultHeader
- call addDefaultHeader in constructor
 
-  How to handle multiple requests with same instance
- Make new request object on every request call
- Pass in default headers to new req obj
 
- Port library to other applications