add readme

.Rbuildignore

@@ -1,2 +1,3 @@
 ^arcR\.Rproj$
 ^\.Rproj\.user$
+^README\.Rmd$

README.Rmd

@@ -0,0 +1,36 @@
+---
+output: github_document
+---
+
+<!-- README.md is generated from README.Rmd. Please edit that file -->
+
+```{r, include = FALSE}
+knitr::opts_chunk$set(
+  collapse = TRUE,
+  comment = "##",
+  fig.path = "man/figures/README-",
+  out.width = "100%",
+  warning = FALSE,
+  message = FALSE
+)
+```
+
+# arcR <img src="man/figures/logo.png" align="right" height="90"/>
+
+<!-- badges: start -->
+[![CRAN](https://www.r-pkg.org/badges/version/arcR)](https://CRAN.R-project.org/package=arcR)
+[![r-universe](https://spatlyu.r-universe.dev/badges/arcR)](https://spatlyu.r-universe.dev/arcR)
+<!-- badges: end -->
+
+The goal of **arcR** is to integrate the benefits of *R* and *ArcGIS* with using *ArcGIS* in *R*.
+
+## Installation
+
+You can install the development version of *arcR* from [GitHub](https://github.com/SpatLyu/arcR) with:
+
+``` r
+# install.packages("devtools")
+devtools::install_github("SpatLyu/arcR",build_vignettes = T,dep = T)
+```
+
+## Example

README.md

@@ -0,0 +1,25 @@
+
+<!-- README.md is generated from README.Rmd. Please edit that file -->
+
+# arcR <img src="man/figures/logo.png" align="right" height="90"/>
+
+<!-- badges: start -->
+
+[![CRAN](https://www.r-pkg.org/badges/version/arcR)](https://CRAN.R-project.org/package=arcR)
+[![r-universe](https://spatlyu.r-universe.dev/badges/arcR)](https://spatlyu.r-universe.dev/arcR)
+<!-- badges: end -->
+
+The goal of **arcR** is to integrate the benefits of *R* and *ArcGIS*
+with using *ArcGIS* in *R*.
+
+## Installation
+
+You can install the development version of *arcR* from
+[GitHub](https://github.com/SpatLyu/arcR) with:
+
+``` r
+# install.packages("devtools")
+devtools::install_github("SpatLyu/arcR",build_vignettes = T,dep = T)
+```
+
+## Example