Fix the version checking of DEPS file.

Author: domchen

package.json

@@ -1,6 +1,6 @@
 {
   "name": "depsync",
-  "version": "1.3.15",
+  "version": "1.3.16",
   "author": "Dom Chen",
   "homepage": "https://github.com/domchen/depsync",
   "description": "Automatically synchronize the dependencies of a project by the DEPS configuration file.",

src/Config.js

@@ -159,7 +159,8 @@ function parse(configFileName, version, platform) {
         Utils.error("The DEPS config requires a higher version of depsync tool: " + configFileName);
         Utils.error("Requires version: " + config.version);
         Utils.error("Current version: " + version);
-        Utils.error("Please update the depsync tool and try again.");
+        Utils.error("To upgrade the depsync tool, run:");
+        Utils.error("  `npm install -g depsync`");
         return null;
     }
     let files = filterByPlatform(data.files, platform);

src/Program.js

@@ -63,9 +63,11 @@ function makePadding(paddingLength) {
 
 
 function run(args) {
-    let version = process.versions.node;
-    if (Utils.compareVersion(version, "14.14.0") < 0) {
-        Utils.error("Node.js version must be greater than or equal to 14.14.0\n");
+    let nodeVersion = process.versions.node;
+    if (Utils.compareVersion(nodeVersion, "14.14.0") < 0) {
+        Utils.error("The depsync tool requires Node.js version 14.14.0 or later. ");
+        Utils.error("Current version: " + nodeVersion);
+        Utils.error("Please visit https://nodejs.org to download the latest version.");
         process.exit(1);
     }
     let commandOptions = CommandLine.parse(args);