Closes #341. Add indent_size option to Rubocop beautifier

examples/nested-jsbeautifyrc/.jsbeautifyrc

@@ -40,3 +40,5 @@
     indent_class: true
     indent_with_tabs: 0
     indent_size: 1
+  ruby:
+    indent_size: 4

src/beautifiers/rubocop.coffee

@@ -9,15 +9,32 @@ module.exports = class Rubocop extends Beautifier
     name: "Rubocop"
 
     options: {
-        Ruby: true
+        Ruby:
+            indent_size: true
     }
 
     beautify: (text, language, options) ->
+
+        # Generate config file
+        yaml = require("yaml-front-matter")
+
+        config = {
+            "Style/IndentationWidth":
+                "Width": options.indent_size
+        }
+        configStr = yaml.safeDump(config)
+        console.log("rubocop", config, configStr)
+
         @run("rubocop", [
             "--auto-correct"
+            "--config", @tempFile("rubocop-config", configStr)
             tempFile = @tempFile("temp", text)
             ], {ignoreReturnCode: true})
             .then(=>
                 # console.log('rubocop', arguments, tempFile)
                 @readFile(tempFile)
+                .then((text) ->
+                    console.log('rubocop', text)
+                    return text
+                )
             )

src/beautifiers/ruby-beautify.coffee

@@ -9,7 +9,7 @@ module.exports = class RubyBeautify extends Beautifier
     name: "Ruby Beautify"
 
     options: {
-        Ruby: true
+        Ruby: false
     }
 
     beautify: (text, language, options) ->

src/languages/ruby.coffee

@@ -1,3 +1,10 @@
+# Get Atom defaults
+tabLength = atom?.config.get('editor.tabLength') ? 4
+softTabs = atom?.config.get('editor.softTabs') ? true
+defaultIndentSize = (if softTabs then tabLength else 1)
+defaultIndentChar = (if softTabs then " " else "\t")
+defaultIndentWithTabs = not softTabs
+
 module.exports = {
 
     name: "Ruby"
@@ -18,6 +25,11 @@ module.exports = {
         "rb"
     ]
 
-    options: []
+    options:
+        indent_size:
+            type: 'integer'
+            default: defaultIndentSize
+            minimum: 0
+            description: "Indentation size/length"
 
 }