add a kable function with better doc
diff --git a/man/column_spec.Rd b/man/column_spec.Rd
index 0857f4d..698c688 100644
--- a/man/column_spec.Rd
+++ b/man/column_spec.Rd
@@ -21,7 +21,8 @@
   width_max = NULL,
   extra_css = NULL,
   include_thead = FALSE,
-  latex_column_spec = NULL
+  latex_column_spec = NULL,
+  latex_valign = "p"
 )
 }
 \arguments{
@@ -77,6 +78,9 @@
 
 \item{latex_column_spec}{Only for LaTeX tables.  Code to replace the column
 specification.  If not \code{NULL}, will override all other arguments.}
+
+\item{latex_valign}{vertical alignment. Only works when you specified column
+width. Choose among \code{p}, \code{m}, \code{b}.}
 }
 \description{
 This function allows users to select a column and then specify