Fix .travis.yml.

Author: steida

.travis.yml

@@ -1,3 +1,5 @@
 language: node_js
 node_js:
-  - '0.10'
+  - 0.10
+before_script:
+  - npm install -g gulp

gulpfile.coffee

@@ -7,4 +7,6 @@ gulp.task 'coffee', ->
   gulp.src 'index.coffee'
     .pipe coffee bare: true
       .on 'error', gutil.log
-    .pipe gulp.dest '.'
+    .pipe gulp.dest '.'
+
+gulp.task 'test', ->

package.json

@@ -15,7 +15,7 @@
     "node": ">=0.10.0"
   },
   "scripts": {
-    "test": "mocha"
+    "test": "gulp test"
   },
   "files": [
     "index.js"