Modify README

README.md

@@ -22,28 +22,44 @@ ecswalk tasks
 
 ### Get Information from ECS
 
-* get ECS clusters
+#### get ECS clusters
 
 ```bash
 ecswalk get clusters
 ```
 
-* get ECS services for specified ECS cluster
+#### get ECS services for specified ECS cluster
 
 ```bash
 ecswalk get service -c default
 ```
 
-* get ECS tasks for specified ECS cluster and service
+#### get ECS tasks for specified ECS cluster and service
 
 ```bash
 ecswalk get tasks -c default -s web-service
 ```
 
+## Install
+
+```bash
+go get github.com/mpon/ecswalk
+```
+
+or
+
+Download from [GitHub Releases](https://github.com/mpon/ecswalk/releases)
+
 ## Options
 
-* you can set aws configure profile by `.ecswalk.yaml`
+You can set aws profile by `.ecswalk.yaml` or `$HOME/.ecswalk.yaml`.
 
 ```yaml
 profile: my-aws
 ```
+
+or pass config to command.
+
+```bash
+ecswalk --config conf.yaml
+```