read_results: Reads track and field results into a list of strings in...
In JumpeR: Importing and Working with Track and Field Data

Outputs list of strings to be processed by tf_parse

1	read_results(file, node = "pre")

`file`	a .pdf or .html file (could be a url) where containing swimming track and field results. pdfs with multiple columns will not work.
`node`	a CSS node where html results are stored. Required for html results. Default is "pre", which nearly always works.

returns a list of strings containing the information from file. Should then be parsed with tf_parse

read_results is meant to be followed by tf_parse