Fix README

README.md

@@ -6,31 +6,30 @@
 ## Installation
 
   1. Add `cloud_vision` to your list of dependencies in `mix.exs`:
-
-    ```elixir
-    def deps do
-      [{:cloud_vision, "~> 1.0.0"}]
-    end
-    ```
+  ```elixir
+  def deps do
+    [{:cloud_vision, "~> 1.0.0"}]
+  end
+  ```
 
   2. Ensure `cloud_vision` is started before your application:
 
-    ```elixir
-    def application do
-      [applications: [:cloud_vision]]
-    end
-    ```
+  ```elixir
+  def application do
+    [applications: [:cloud_vision]]
+  end
+  ```
 
   3. Configure credentials for [goth](https://github.com/peburrows/goth):
 
-    ```elixir
-    config :goth, json: "PATH_TO_YOUR_CREDENTIALS" |> File.read!
-    ````
+  ```elixir
+  config :goth, json: "PATH_TO_YOUR_CREDENTIALS" |> File.read!
+  ````
 
   4. (Optional) Configure your Google Cloud Storage Bucket URI if you want to retrieve file from it:
-    ```elixir
-    config :ex_cloud_vision, gcsUri: "YOUR_BUCKET_URI" # e.g. xxx.appspot.com
-    ```
+  ```elixir
+  config :ex_cloud_vision, gcsUri: "YOUR_BUCKET_URI" # e.g. xxx.appspot.com
+  ```
 
 ## Usage