fix missing jsdoc (#406)

* fix missing jsdoc

* add a few words about save and render functions

docs/tools.md

@@ -31,8 +31,12 @@ constructor({data, config, api}) {
 
 ### render()
 
+Method that returns Tool's element {HTMLElement} that will be placed into Editor.
+
 ### save()
 
+Process Tool's element created by `render()` function in DOM and return Block's data.
+
 ### validate() _optional_
 
 ### merge() _optional_

src/codex.js

@@ -1,44 +1,3 @@
-/**
- * Codex Editor
- *
- * Short Description (눈_눈;)
- * @version 2.0.0
- *
- * How to start?
- * Example:
- *           new CodexEditor({
- *                holderId : 'codex-editor',
- *                initialBlock : 'text',
- *                placeholder : 'Write your story....',
- *                tools: {
- *                    quote: Quote,
- *                    anotherTool : AnotherTool
- *                },
- *                toolsConfig: {
- *                     quote: {
- *                        iconClassname : 'quote-icon',
- *                        displayInToolbox : true,
- *                        enableLineBreaks : true
- *                     },
- *                     anotherTool: {
- *                        iconClassname : 'tool-icon'
- *                     }
- *                 }
- *            });
- *
- * - tools is an object: {
- *       pluginName: PluginClass,
- *       .....
- *   }
- * - toolsConfig is an additional configuration that uses Codex Editor API
- *      iconClassname - CSS classname of toolbox icon
- *      displayInToolbox - if you want to see your Tool in toolbox hided in "plus" button, than set "True". By default : "False"
- *      enableLineBreaks - by default enter creates new block that set as initialblock, but if you set this property "True", enter will break the lines in current block
- *
- * @author CodeX-Team <https://ifmo.su>
- *
- */
-
 'use strict';
 
 /**
@@ -49,6 +8,14 @@ import 'babel-polyfill';
 import 'components/polyfills';
 import Core from './components/core';
 
+/**
+ * Codex Editor
+ *
+ * Short Description (눈_눈;)
+ * @version 2.0
+ *
+ * @author CodeX-Team <https://ifmo.su>
+ */
 export default class CodexEditor {
   /** Editor version */
   static get version() {