README.md in cogy-0.5.2 vs README.md in cogy-0.6.0

@@ -73,11 +73,11 @@
 ## Requirements
 
 * Cog 1.0.0.beta2 or later
 * [cogy bundle](https://github.com/skroutz/cogy-bundle) 0.4.0 or later
 * Ruby 2.1 or later
-* Rails 4.2 (support for Rails 5 is on the way)
+* Rails 4.2 or later
 
 ## Status
 
 Cogy is still in public alpha.
 
@@ -257,11 +257,11 @@
     # a string.
     #
     # Default: "0.0.1"
     version: "0.0.1",
 
-    # if you used a callable object, it will be evaluated each time the inventory
+    # If you used a callable object, it will be evaluated each time the inventory
     # is called. This can be useful if you want the version to change
     # automatically.
     #
     # For example, this will change the version only when a command is
     # added or is modified (uses the 'grit' gem).
@@ -355,14 +355,21 @@
 `app/views/cogy/error.text.erb`.
 
 ## Testing commands
 
 We don't yet provide means to write tests for the commands, but you can easily
-test them by executing a request to your development server:
+test them by executing a request to your development server. For example,
+if you mounted the engine like so:
 
+```ruby
+mount Cogy::Engine, at: "cogy"
+```
+
+you can test a `foo` command like this:
+
 ```shell
-$ curl -XPOST --data "COG_ARGV_0=foo" http://localhost:3000/cogy/foo
+$ curl -XPOST --data "COG_ARGV_0=foo" http://localhost:3000/cogy/cmd/foo
 ```
 
 In the request body you may pass the complete or any part of the
 [Cog environment](https://cog-book.operable.io/#_command_environment_variables) you need.
 
@@ -448,11 +455,11 @@
 See [_Deployment_](#deployment) on information about how this trigger is
 invoked.
 
 ## Development
 
-Running the tests and RuboCop:
+Running the tests and RuboCop for the latest Rails version:
 
 ```shell
 $ rake
 ```
 
@@ -470,9 +477,22 @@
 
 Generating documentation:
 
 ```shell
 $ rake yard
+```
+
+Running the tests for all the supported Rails versions:
+
+
+```shell
+$ appraisal rake
+```
+
+Or for a specific version:
+
+```shell
+$ appraisal 4.2 rake test
 ```
 
 ## Authors
 
 * [Agis Anastasopoulos](https://github.com/agis-)