Fix version check for git-snapshots and nightlies

Author: silvanocerza

Diff for: cli/updater/updater.go

@@ -80,7 +80,7 @@ func NotifyNewVersionIsAvailable(latestVersion string) {
 // shouldCheckForUpdate return true if it actually makes sense to check for new updates,
 // false in all other cases.
 func shouldCheckForUpdate(currentVersion *semver.Version) bool {
-	if strings.Contains(currentVersion.String(), "git") {
+	if strings.Contains(currentVersion.String(), "git-snapshot") || strings.Contains(currentVersion.String(), "nightly") {
 		// This is a dev build, no need to check for updates
 		return false
 	}

Diff for: cli/version/version.go

@@ -43,7 +43,7 @@ func NewCommand() *cobra.Command {
 }
 
 func run(cmd *cobra.Command, args []string) {
-	if strings.Contains(globals.VersionInfo.VersionString, "git-snapshot") {
+	if strings.Contains(globals.VersionInfo.VersionString, "git-snapshot") || strings.Contains(globals.VersionInfo.VersionString, "nightly") {
 		// We're using a development version, no need to check if there's a
 		// new release available
 		feedback.Print(globals.VersionInfo)