Update RubyMine information with watchers.xml (#353)

README.md

@@ -46,9 +46,7 @@ Once installed, add the following to vscode's `settings.json` file:
 
 ### RubyMine (and similar Jetbrains family IDE)
 
-[Install](https://www.jetbrains.com/help/ruby/settings-tools-file-watchers.html) the File Watchers plugin and configue it like shown below.
-
-<img src="https://user-images.githubusercontent.com/8165/90933920-3b32eb80-e3b5-11ea-9a38-120249d022a3.png" height="300" />
+[Install](https://www.jetbrains.com/help/ruby/settings-tools-file-watchers.html) the File Watchers plugin and go to `File | Settings | Tools | File Watchers`. Now import `watchers.xml` from `editor_plugins/rubymine/`. Optionally set `Level` to `Global` to have it available across all projects.
 
 See [this reference](https://www.jetbrains.com/help/ruby/using-file-watchers.html#ws_filewatcher_type_and_location_of_input_files) on using file watchers to learn more.
 

editor_plugins/rubymine/watchers.xml

@@ -0,0 +1,22 @@
+<TaskOptions>
+  <TaskOptions>
+    <option name="arguments" value="-i -- $FilePath$" />
+    <option name="checkSyntaxErrors" value="true" />
+    <option name="description" />
+    <option name="exitCodeBehavior" value="ERROR" />
+    <option name="fileExtension" value="rb" />
+    <option name="immediateSync" value="false" />
+    <option name="name" value="rubyfmt" />
+    <option name="output" value="$FilePath$" />
+    <option name="outputFilters">
+      <array />
+    </option>
+    <option name="outputFromStdout" value="false" />
+    <option name="program" value="rubyfmt" />
+    <option name="runOnExternalChanges" value="false" />
+    <option name="scopeName" value="Project Files" />
+    <option name="trackOnlyRoot" value="false" />
+    <option name="workingDir" value="" />
+    <envs />
+  </TaskOptions>
+</TaskOptions>