paint warning and error log messages

lib/log.js

@@ -1,5 +1,6 @@
 import Progress from 'progress';
 import assert from 'assert';
+import chalk from 'chalk';
 
 class Log {
   info (text) {
@@ -7,11 +8,12 @@ class Log {
   }
 
   warn (text) {
-    console.log('> ' + text); // TODO warn?
+    console.log(`> ${chalk.blue('WARN')} ${text}`);
   }
 
   error (text) {
-    console.log('> ' + text); // TODO error?
+    if (text.message) text = text.message;
+    console.log(`> ${chalk.red('ERR!')} ${text}`);
   }
 
   enableProgress (text) {

package.json

@@ -17,10 +17,11 @@
   "dependencies": {
     "babel-runtime": "6.11.6",
     "byline": "5.0.0",
+    "chalk": "^1.1.3",
     "expand-template": "1.0.2",
     "fs-promise": "0.5.0",
-    "progress": "1.1.8",
     "minimist": "1.2.0",
+    "progress": "1.1.8",
     "request": "2.74.0",
     "request-progress": "2.0.1",
     "semver": "5.3.0",