Merge pull request #2102 from rudyryk/patch-2

Update build.js

tasks/build.js

@@ -16,7 +16,7 @@ module.exports = function(callback) {
   console.info('Building Semantic');
 
   if( !install.isSetup() ) {
-    console.error('Cannot build files. Run "gulp install" to set-up Semantic');
+    console.error('Cannot find semantic.json file. Run "gulp install" to set-up Semantic');
     return;
   }
 
@@ -31,4 +31,4 @@ module.exports = function(callback) {
   gulp.start('build-assets');
 
 
-};
+};