improve formatting of code snippets

README.md

@@ -9,46 +9,46 @@ Examples
 Client example
 
 ```ruby
-    params = {:some => 'parameters'}
-    token = Signature::Token.new('my_key', 'my_secret')
-    request = Signature::Request.new('POST', '/api/thing', params)
-    auth_hash = request.sign(token)
-    query_params = params.merge(auth_hash)
-
-    HTTParty.post('http://myservice/api/thing', {
-      :query => query_params
-    })
+params       = {:some => 'parameters'}
+token        = Signature::Token.new('my_key', 'my_secret')
+request      = Signature::Request.new('POST', '/api/thing', params)
+auth_hash    = request.sign(token)
+query_params = params.merge(auth_hash)
+
+HTTParty.post('http://myservice/api/thing', {
+  :query => query_params
+})
 ```
 
 `query_params` looks like:
 
 ```ruby
-    {
-      :some => "parameters",
-      :auth_timestamp => 1273231888,
-      :auth_signature => "28b6bb0f242f71064916fad6ae463fe91f5adc302222dfc02c348ae1941eaf80",
-      :auth_version => "1.0",
-      :auth_key => "my_key"
-    }
+{
+  :some           => "parameters",
+  :auth_timestamp => 1273231888,
+  :auth_signature => "28b6bb0f242f71064916fad6ae463fe91f5adc302222dfc02c348ae1941eaf80",
+  :auth_version   => "1.0",
+  :auth_key       => "my_key"
+}
 
 ```
 Server example (sinatra)
 
 ```ruby
-    error Signature::AuthenticationError do |controller|
-      error = controller.env["sinatra.error"]
-      halt 401, "401 UNAUTHORIZED: #{error.message}\n"
-    end
-
-    post '/api/thing' do
-      request = Signature::Request.new('POST', env["REQUEST_PATH"], params)
-      # This will raise a Signature::AuthenticationError if request does not authenticate
-      token = request.authenticate do |key|
-        Signature::Token.new(key, lookup_secret(key))
-      end
-
-      # Do whatever you need to do
-    end
+error Signature::AuthenticationError do |controller|
+  error = controller.env["sinatra.error"]
+  halt 401, "401 UNAUTHORIZED: #{error.message}\n"
+end
+
+post '/api/thing' do
+  request = Signature::Request.new('POST', env["REQUEST_PATH"], params)
+  # This will raise a Signature::AuthenticationError if request does not authenticate
+  token = request.authenticate do |key|
+    Signature::Token.new(key, lookup_secret(key))
+  end
+
+  # Do whatever you need to do
+end
 ```
 
 Pre-requisites