rw_remove_first: Remove first sentence of paragraph (rw_remove_first)
In chrismgillen/readtowrite: Reading exercises for writers

Input is a text file with multiple paragraphs. Output is a text file for each paragraph with the first sentence removed.

rw_remove_first(
  infile,
  title = "title",
  part = "section",
  project = "name",
  parabreak = "\r\n"
)

`infile`	A text file containing several paragraphs.
`title`	Title of text (e.g. paper reference).
`part`	Part of the text (e.g. paper section). Used in filenames.
`project`	Project nickname for use in filenames
`parabreak`	The characters that designate paragraph breaks in the input