#2 add README

Author: kohbis

.gitignore

@@ -4,6 +4,8 @@
 *.so
 *.dylib
 
+dimg
+
 # Test binary, built with `go test -c`
 *.test
 

README.md

@@ -1,5 +1,29 @@
+# dimg
+
+CLI to search and pull images from Docker Hub.
+
+## Download and Install
+
+Download and Install with [Homebrew](https://brew.sh/).
+```bash
+$ brew install kohbis/dimg/dimg
 ```
-brew install kohbis/dimg/dimg
+
+## Usage
+
+```bash
+$ dimg
 ```
 
+You can search image with name and pull specific image with tag.
+
+![console](doc/image/console_library.png)
+
+Default repogitory is official `library`.
+If You want specify repogitory, input Image Name like `${repo_name}/${image_name}`.
+
+![console](doc/image/console_repo_specified.png)
+
+## Appendix
+
 [Docker Advent Calendar 2019 22日目](https://qiita.com/kohbis/items/684b546d9e75e8b2b80b)