create_reference: wrapper around tidyquant functions to create a reference...
In DavisWeaver/stonkr_public: Quantitative trading for the people

was going to set this up entirely via API but turns out the easiest way to do this by far is to download the full tables via batch download and start from there

create_reference(
  vendor = "quandl",
  ncores = 4,
  data_repo = "G:/My Drive/pkg/data/sharadar/",
  year = 2018
)

`vendor`	which data warehouse - currently only works with the Sharadar tables from quandl
`ncores`	number of cores to utilize for data processing and ingestion
`data_repo`	filepath where function can find the Sharadar/SF1 table,
`year`	year or range of years to create the reference database from. good idea to choose range with similar macroeconomic conditions to current economy.