remove add_header_left entirely
update rd files
improve package documentation based on @wibeasley's suggestion
diff --git a/man/usepackage_latex.Rd b/man/usepackage_latex.Rd
index 62cabb8..ab2e09c 100644
--- a/man/usepackage_latex.Rd
+++ b/man/usepackage_latex.Rd
@@ -12,7 +12,7 @@
 \item{options}{The LaTeX options for the package}
 }
 \description{
-Load a LaTeX package using R code. Just like `\\usepackage{}`
+Load a LaTeX package using R code. Just like \code{\\usepackage{}}
 in LaTeX
 }
 \examples{