diff --git a/R/axis.R b/R/axis.R
index 73ccdab..f6eb88f 100644
--- a/R/axis.R
+++ b/R/axis.R
@@ -37,7 +37,7 @@ alab_ <- function(label, axis, fontsize=11, ...) {
 ##' @importFrom ggplot2 element_blank
 ##' @importFrom ggplot2 margin
 ##' @export
-ggplot_add.alab <- function(object, plot, object_name) {
+ggplot_add.alab <- function(object, plot, object_name, ...) {
     label <- object$label
     object$label <- NULL
     axis <- object$axis
@@ -113,7 +113,7 @@ axis_align <- function(gg, limits = NULL, axis) {
 ##' @importFrom ggplot2 scale_y_continuous
 ##' @importFrom methods is
 ##' @export
-ggplot_add.axisAlign <- function(object, plot, object_name) {
+ggplot_add.axisAlign <- function(object, plot, object_name, ...) {
     limits <- object$limits
 
     ## expand_limits <- object$expand_limits
@@ -181,7 +181,7 @@ ggplot_add.axisAlign <- function(object, plot, object_name) {
         }
         ## }
     }
-    ggplot_add(scale_lim, plot, object_name)
+    ggplot_add(scale_lim, plot, object_name, ...)
 }
 
 set_scale_limits <- function(scales, limits, expand){
diff --git a/README.Rmd b/README.Rmd
index 0644dfc..0411313 100644
--- a/README.Rmd
+++ b/README.Rmd
@@ -10,6 +10,8 @@ html_preview: false
 
 # `aplot` for decorating a plot with associated information
 
+<a href="https://yulab-smu.top/aplot/"><img src="man/figures/aplot_logo.png" height="160" align="right" /></a>
+
 `r badger::badge_license("Artistic-2.0")`
 `r badger::badge_github_version("YuLab-SMU/aplot", "blue")`
 `r badger::badge_code_size("YuLab-SMU/aplot")`
diff --git a/README.md b/README.md
index 4568a47..786d35f 100644
--- a/README.md
+++ b/README.md
@@ -2,6 +2,8 @@
 
 # `aplot` for decorating a plot with associated information
 
+<a href="https://yulab-smu.top/aplot/"><img src="man/figures/aplot_logo.png" height="160" align="right" /></a>
+
 [![License:
 Artistic-2.0](https://img.shields.io/badge/license-Artistic--2.0-blue.svg)](https://cran.r-project.org/web/licenses/Artistic-2.0)
 [![](https://img.shields.io/badge/devel%20version-0.2.5-blue.svg)](https://github.com/YuLab-SMU/aplot)
@@ -17,10 +19,9 @@ status](https://github.com/YuLab-SMU/aplot/workflows/rworkflows/badge.svg)](http
 For many times, we are not just aligning plots as what ‘cowplot’ and
 ‘patchwork’ did. Users would like to align associated information that
 requires axes to be exactly matched in subplots, e.g. hierarchical
-clustering with a heatmap. Inspired by the ‘Method 2’ in ‘ggtree’ (G Yu
-(2018) <doi:10.1093/molbev/msy194>), ‘aplot’ provides utilities to
-aligns associated subplots to a main plot at different sides (left,
-right, top and bottom) with axes exactly matched.
+clustering with a heatmap. This package provides utilities to aligns
+associated subplots to a main plot at different sides (left, right, top
+and bottom) with axes exactly matched.
 
 ## :writing_hand: Authors
 
diff --git a/man/figures/aplot_logo.png b/man/figures/aplot_logo.png
new file mode 100644
index 0000000..8bf1f4a
Binary files /dev/null and b/man/figures/aplot_logo.png differ