R: Add to 'ggplot2'

# Add to 'ggplot2'

## Documentation for package ‘add2ggplot’ version 0.3.0

- DESCRIPTION file
- User guides, package vignettes and other documentation
- Package NEWS
- Package README

## Help Pages

add_logo | Add a logo into an image
get_width_height | Get image width and height
grey_one | The chosen color in grey
grey_two | The chosen color in grey
more_colors | Use a palette with 24 colors
red_one | The chosen color in red
red_two | The chosen color in red
theme_classic2 | Another classic theme
theme_du_bois | Use Du Bois's theme
theme_grey_and_red | Use the ggplot theme in grey and red
theme_ilo | One ggplot theme
theme_white | A ggplot theme with a white background.
white_one | The chosen color in white