Added a general network test command using speedtest.net API

cmd/net.go

@@ -0,0 +1,33 @@
+package cmd
+
+import (
+  "fmt"
+
+  "github.com/showwin/speedtest-go/speedtest"
+  "github.com/spf13/cobra"
+)
+
+var netCmd = &cobra.Command{
+  Use:   "net",
+  Short: "Network test using SpeedTest.net.",
+  Long:  "A network test that utilizes the SpeedTest.net API to determine network bandwidth and latency.",
+  Run: func(cmd *cobra.Command, args []string) {
+    user, _ := speedtest.FetchUserInfo()
+
+  	serverList, _ := speedtest.FetchServers(user)
+  	targets, _ := serverList.FindServer([]int{})
+
+  	for _, s := range targets {
+  		s.PingTest()
+  		s.DownloadTest(false)
+  		s.UploadTest(false)
+
+  		fmt.Printf("Latency: %s, Download: %f, Upload: %f\n", s.Latency, s.DLSpeed, s.ULSpeed)
+  	}
+  },
+}
+
+func init() {
+  // add ping command to the main program
+  rootCmd.AddCommand(netCmd)
+}