Remove checking .min file in CI

.travis.yml

@@ -7,7 +7,4 @@ before_script:
   - npm install
 
 script:
-  - gulp jshint
-  - cp Chart.min.js /tmp/OLD
-  - gulp build
-  - cmp Chart.min.js /tmp/OLD # ensure build was run before commit
+  - gulp test

gulpfile.js

@@ -116,7 +116,7 @@ gulp.task('watch', function(){
 	gulp.watch('./src/*', ['build']);
 });
 
-gulp.task('test', ['jshint']);
+gulp.task('test', ['jshint', 'valid']);
 
 gulp.task('size', ['library-size', 'module-sizes']);