first draft of query api

Goal use `=IMPORTDATA()` in a gsheet to pull in live data from salesforce for our planning/actual spreadsheets

Example url in sandbox: 
https://dev1-cambridgecloudpartners.cs3.force.com/query?auth=22b4ca0243d844274fe55193219e5c29&field=c&soql=select%20count(id)%20c%20from%20user

Review:  @Avinava @jacquesfu