fix example

Author: wata727

Makefile

@@ -16,6 +16,7 @@ install: test
 release: test
 	go get github.com/mitchellh/gox
 	gox --output 'dist/{{.OS}}_{{.Arch}}/{{.Dir}}'
+	mkdir -p dist/releases
 	zip -j dist/releases/tflint_darwin_386.zip    dist/darwin_386/tflint
 	zip -j dist/releases/tflint_darwin_amd64.zip  dist/darwin_amd64/tflint
 	zip -j dist/releases/tflint_freebsd_386.zip   dist/freebsd_386/tflint

README.md

@@ -26,11 +26,14 @@ Download binary built for your architecture from [latest releases](https://githu
 
 An example of installation by command is as follows.
 ```
-$ wget https://github.com/wata727/tflint/releases/download/v0.1.0/tflint_darwin_386.zip
-$ unzip tflint_darwin_386.zip
-$ mkdir /usr/local/tflint/bin
+$ wget https://github.com/wata727/tflint/releases/download/v0.1.0/tflint_darwin_amd64.zip
+$ unzip tflint_darwin_amd64.zip
+Archive:  tflint_darwin_amd64.zip
+  inflating: tflint
+$ mkdir -p /usr/local/tflint/bin
 $ export PATH=/usr/local/tflint/bin:$PATH
 $ install tflint /usr/local/tflint/bin
+$ tflint -v
 ```
 
 ## Quick Start