Fix lint errors (#70)

v2/example/README.md

@@ -1,21 +1,19 @@
-Example
-=======
+# Example
 
 This example runs Sonyflake on AWS Elastic Beanstalk.
 
-Setup
------
+## Setup
 
 1. Build the cross compiler for linux/amd64 if using other platforms.
 
-  ```
-  cd $GOROOT/src && GOOS=linux GOARCH=amd64 ./make.bash
-  ```
+   ```bash
+   cd $GOROOT/src && GOOS=linux GOARCH=amd64 ./make.bash
+   ```
 
 2. Build sonyflake_server in the example directory.
 
-  ```
-  ./linux64_build.sh
-  ```
+   ```bash
+   ./linux64_build.sh
+   ```
 
 3. Upload the example directory to AWS Elastic Beanstalk.