[grunt dev] use --with-es to start es

CONTRIBUTING.md

@@ -51,7 +51,7 @@ grunt test build
 - start the development server.
 
   ```sh
-  grunt dev # use the --es flag to install & start elasticsearch too
+  grunt dev # use the "--with-es" flag to install & start elasticsearch too
   ```
 
 ### Submit a pull request

package.json

@@ -19,7 +19,7 @@
     "grunt-contrib-less": "~0.10.0",
     "grunt-contrib-requirejs": "~0.4.4",
     "grunt-contrib-watch": "~0.5.3",
-    "grunt-esvm": "~0.1.1",
+    "grunt-esvm": "~0.2.0",
     "grunt-mocha": "~0.4.10",
     "grunt-replace": "^0.7.9",
     "grunt-run": "^0.2.3",

tasks/dev.js

@@ -11,7 +11,7 @@ module.exports = function (grunt) {
       'watch'
     ];
 
-    if (!grunt.option('es')) {
+    if (!grunt.option('with-es')) {
       _.pull(tasks, 'esvm:dev');
     }