Update README.md

README.md

@@ -16,29 +16,64 @@ go get github.com/bitebait/dolarpy-go
 package main
 
 import (
-	"encoding/json"
-	"fmt"
+    "encoding/json"
+    "fmt"
 
-	"github.com/bitebait/dolarpy-go"
+    "github.com/bitebait/dolarpy-go"
 )
 
 func main() {
-	dolarpy.All()                    // returns all providers data
-	dolarpy.Providers()              // returns providers names
-	dolarpy.Reference()              // returns reference value from 'bcp'
-	dolarpy.Purchase("cambioschaco") // returns purchase value from 'cambioschaco' (default: 'bcp)
-	dolarpy.Sale("cambioschaco")     // returns sale value from 'cambioschaco' (default: 'bcp)
-
-	// JSON Example
-	j, _ := json.Marshal(dolarpy.All())
-	fmt.Println(string(j))
-
-	// For Loop Example
-	data := dolarpy.All()
-	for key, value := range data {
-		fmt.Printf("Provider: %s - [Purchase: %.2f Sale: %.2f]\n", key, value["compra"], value["venta"])
-	}
+    allData, err := dolarpy.All()
+    if err != nil {
+        fmt.Printf("Failed to get all providers data: %v\n", err)
+        return
+    }
+    fmt.Println(allData)
+
+    providers, err := dolarpy.Providers()
+    if err != nil {
+        fmt.Printf("Failed to get providers names: %v\n", err)
+        return
+    }
+    fmt.Println(providers)
+
+    reference, err := dolarpy.Reference()
+    if err != nil {
+        fmt.Printf("Failed to get reference value: %v\n", err)
+        return
+    }
+    fmt.Println(reference)
+
+    purchase, err := dolarpy.Purchase("cambioschaco")
+    if err != nil {
+        fmt.Printf("Failed to get purchase value from 'cambioschaco': %v\n", err)
+        return
+    }
+    fmt.Println(purchase)
+
+    sale, err := dolarpy.Sale("cambioschaco")
+    if err != nil {
+        fmt.Printf("Failed to get sale value from 'cambioschaco': %v\n", err)
+        return
+    }
+    fmt.Println(sale)
+
+    data, err := dolarpy.All()
+    if err != nil {
+        fmt.Printf("Failed to get all providers data: %v\n", err)
+        return
+    }
+
+    j, _ := json.Marshal(data)
+    fmt.Println(string(j))
+
+    for provider, values := range data {
+        purchase := values["compra"]
+        sale := values["venta"]
+        fmt.Printf("Provider: %s - [Purchase: %.2f Sale: %.2f]\n", provider, purchase, sale)
+    }
 }
+
 ```
 
 ## Contributing