Removing []string examples and fixing doc

Author: saniales

task/README.adoc

@@ -31,10 +31,10 @@ This struct allows to wrap useful messages to describe the behaviour of a functi
 [source, go]
 ----
 type Wrapper struct {
-    BeforeMessage []string 
-	Task          task.Task
-	AfterMessage  []string
-	ErrorMessage  []string
+    BeforeMessage string 
+    Task          task.Task
+    AfterMessage  string
+    ErrorMessage  string
 }
 
 type task.Task func() task.Result
@@ -45,71 +45,4 @@ type task.Result struct {
 }
 ----
 
-Where `BeforeMessage`, `AfterMessage` and `ErrorMessage` are slices of different strings, one string per verbosity level supported.
-Example : `verbosity = 2` equals to print second cell of each slice (`index = 1`).
-
-`Task` is the task to accomplish and `Result` represents a possible return value, with an error.
-
-Let's put everything in practice with the following example:
-[source, go]
-----
-myWrapper := task.Wrapper{
-    BeforeMessage: []string{
-        "Hello",
-    },
-    AfterMessage: []string{
-        "Good bye",
-        "Farewell, my friend",
-    },
-    ErrorMessage: []string{
-        "There's something's rotten in Denmark...",
-        `Through me the way into the suffering city
-Through me the way to eternal pain,
-Through me the way that runs among the lost....`,
-    },
-    Task: func() task.Result {
-        fmt.Println("Printing awesome poetry quotes on error")
-        return task.Result{
-            Error: errors.New("poetry error")
-        }
-    },
-}
-----
-
-We espect this wrapper to print different stuff when executed. For example:
-[source, go]
-----
-var verbosity int = 1
-myWrapper.Execute(verbosity)
-fmt.Println()
-verbosity++
-myWrapper.Execute(verbosity)
-fmt.Println()
-verbosity++ // Note that verbosity = 3 and there is no slice in BeforeMessage, 
-            // AfterMessage, ErrorMessage with 3 elements
-myWrapper.Execute(verbosity)
-----
-
-Expects to print:
-----
-Hello
-Printing awesome poetry quotes on error
-There's something's rotten in Denmark...
-Good bye
-
-Hello
-Printing awesome poetry quotes on error
-Through me the way into the suffering city
-Through me the way to eternal pain,
-Through me the way that runs among the lost....
-Farewell, my friend
-
-Hello
-Printing awesome poetry quotes on error
-Through me the way into the suffering city
-Through me the way to eternal pain,
-Through me the way that runs among the lost....
-Farewell, my friend
-----
-
-Check out the documentation for further details
+Check out the documentation for further details