Add a bit documentation and simplifications

cmd/info/info.go

@@ -81,6 +81,7 @@ func AskRemoteVersion(language string) (version string, err error) {
 	return
 }
 
+// PossibleLanguage gets the most possible language that user probably meant
 func PossibleLanguage(args []string) (language string) {
 	for _, element := range args {
 		data := strings.Split(element, "@")

cmd/print/print.go

@@ -164,6 +164,7 @@ func Download(response *grab.Response, version string) string {
 	return response.Filename
 }
 
+// Greens prints stuff in green
 func Green(msg string) {
 	fmt.Println()
 	fmt.Println(ansi.Color("> ", "green") + msg)
@@ -184,6 +185,7 @@ func Warning(note, command string) {
 	}
 }
 
+// ClosestLangWarning prints error message for the similar typed language
 func ClosestLangWarning(language, closest string) {
 	incorrectOne := ansi.Color(language, "red")
 

plugins/golang/golang.go

@@ -27,7 +27,7 @@ var (
 	// DownloadLink from which we download binaries for golang
 	DownloadLink = "https://storage.googleapis.com/golang"
 
-	versionPattern = "\\d+\\.\\d+(?:\\.\\d+)?(?:(alpha|beta|rc)(?:\\d*)?)?"
+	versionPattern = `\d+\.\d+(?:\.\d+)?(?:(alpha|beta|rc)(?:\d*)?)?`
 
 	bins = []string{"go", "godoc", "gofmt"}
 	dots = []string{".go-version"}

shell/shell.go

@@ -52,6 +52,7 @@ func (shell *Shell) Initiate() (err error) {
 	return
 }
 
+// Remove some text from the shell config file
 func (shell *Shell) Remove() (err error) {
 	err = shell.rc.Remove()
 	if err != nil {