Format text as R Markdown headings.

RStudio add-ins to format text as R Markdown headings.

rmd_b_heading_1()

rmd_b_heading_2()

rmd_b_heading_3()

rmd_b_heading_4()

rmd_b_heading_5()

rmd_b_heading_6()

rmd_b_heading_01a_title()

rmd_b_heading_01b_subtitle()