README.md in symmetric-encryption-0.8.0 vs README.md in symmetric-encryption-0.9.0

@@ -127,11 +127,23 @@
       file.write "Hello World\n"
       file.write "Compress this\n"
       file.write "Keep this safe and secure\n"
     end
 
+### Standalone test
 
+Before generating keys we can use SymmetricEncryption in a standalone test environment:
+
+    # Use test encryption keys
+    SymmetricEncryption.cipher = SymmetricEncryption::Cipher.new(
+      :key    => '1234567890ABCDEF1234567890ABCDEF',
+      :iv     => '1234567890ABCDEF',
+      :cipher => 'aes-128-cbc'
+    )
+    encrypted = SymmetricEncryption.encrypt('hello world')
+    puts SymmetricEncryption.decrypt(encrypted)
+
 ### Generating encrypted passwords
 
 The following rake task can be used to generate encrypted passwords for the
 specified environment
 
@@ -141,15 +153,15 @@
 ## Installation
 
 ### Add to an existing Rails project
 Add the following line to Gemfile
 
-  gem 'symmetric-encryption'
+    gem 'symmetric-encryption'
 
 Install the Gem with bundler
 
-  bundle install
+    bundle install
 
 ## Rails Configuration
 
 ### Creating the configuration file
 
@@ -158,11 +170,11 @@
 to these files in production. Once the config file has been generated it can be
 modified as needed.
 
 Generate the configuration file:
 
-  rails generate symmetric_encryption:config /etc/rails/keys
+    rails generate symmetric_encryption:config /etc/rails/keys
 
 Note: Ignore the warning about "Symmetric Encryption config not found" since it is
 being generated
 
 #### Save to version control
@@ -222,10 +234,10 @@
 
 SymmetricEncryption can also be used in non-Rails environment.
 
 Install SymmetricEncryption
 
-  gem install symmetric-encryption
+    gem install symmetric-encryption
 
 Manually create a symmetric-encryption.yml configuration file based on the
 one supplied in examples/symmetric-encryption.yml.
 
 At application startup, run the code below to initialize symmetric-encryption prior to