corrected the errors in the file

gridstack/gridstack.d.ts

@@ -1,6 +1,6 @@
 // Type definitions for Gridstack
 // Project: http://troolee.github.io/gridstack.js/
-// Definitions by: Pascal Senn  <https://github.com/PascalSenn/>
+// Definitions by: Pascal Senn <https://github.com/PascalSenn/>
 // Definitions: https://github.com/borisyankov/DefinitelyTyped
 
 interface JQuery {
@@ -22,18 +22,18 @@ interface GridStack {
      */
     add_widget(el: string, x: number, y: number, width: number, height: number, auto_position: boolean): JQuery
     /**
-    * Initailizes batch updates. You will see no changes until commit method is called.
+    * Initializes batch updates. You will see no changes until commit method is called.
     */
-    batch_update()
+    batch_update():void
     /**
     * Gets current cell height.
     */
     cell_height():number
     /**
-    * Update current cell height. This method rebuilds an internal CSS stylesheet. Note: You can expect performance issues if call this method too often.
+    * Update current cell height. This method rebuilds an internal CSS style sheet. Note: You can expect performance issues if call this method too often.
     * @param {number} val the cell height
     */
-    cell_height(val:number)
+    cell_height(val:number):void
     /**
     * Gets current cell width.
     */
@@ -41,19 +41,19 @@ interface GridStack {
     /**
     * Finishes batch updates. Updates DOM nodes. You must call it after batch_update.
     */
-    commit()
+    commit():void
     /**
     * Destroys a grid instance.
     */
-    destroy()
+    destroy(): void
     /*
     * Disables widgets moving/resizing.
     */
-    disable()
+    disable(): void
     /*
     * Enables widgets moving/resizing.
     */
-    enable()
+    enable(): void
     /*
     * Get the position of the cell under a pixel on screen.
     * @param  {MousePosition}  position the position of the pixel to resolve in absolute coordinates, as an object with top and leftproperties
@@ -66,31 +66,31 @@ interface GridStack {
     * @param {number} width the width of to check
     * @param {number} height the height of to check
     */
-    is_area_empty(x: number, y: number, width: number, height: number)
+    is_area_empty(x: number, y: number, width: number, height: number): void
     /*
     * Locks/unlocks widget.
     * @param {HTMLElement} el widget to modify.
     * @param {boolean} val if true widget will be locked.
     */
-    locked(el: HTMLElement, val: boolean)
+    locked(el: HTMLElement, val: boolean): void
     /*
     * Set the minWidth for a widget.
     * @param {HTMLElement} el widget to modify.
     * @param {number} val A numeric value of the number of columns
     */
-    min_width(el: HTMLElement, val: number)
+    min_width(el: HTMLElement, val: number): void
     /*
     * Set the minHeight for a widget.
     * @param {HTMLElement} el widget to modify.
     * @param {number} val A numeric value of the number of rows
     */
-    min_height(el: HTMLElement, val: number)
+    min_height(el: HTMLElement, val: number): void
      /*
     * Enables/Disables moving.
     * @param {HTMLElement} el widget to modify.
     * @param {number} val if true widget will be draggable.
     */
-    movable(el: HTMLElement, val: boolean)
+    movable(el: HTMLElement, val: boolean): void
     /**
     * Changes widget position
     * @param {HTMLElement} el  widget to modify
@@ -98,35 +98,35 @@ interface GridStack {
     * @param {number} y new position y. If value is null or undefined it will be ignored.
     * 
     */
-    move(el: HTMLElement, x: number, y: number)
+    move(el: HTMLElement, x: number, y: number): void
     /**
     * Removes widget from the grid.
     * @param {HTMLElement} el  widget to modify
     * @param {boolean} detach_node if false DOM node won't be removed from the tree (Optional. Default true).
     */
-    remove_widget(el: HTMLElement, detach_node?:boolean)
+    remove_widget(el: HTMLElement, detach_node?: boolean): void
     /**
     * Removes all widgets from the grid.
     */
-    remove_all()
+    remove_all(): void
     /**
     * Changes widget size
     * @param {HTMLElement} el  widget to modify
     * @param {number} width new dimensions width. If value is null or undefined it will be ignored.
     * @param {number} height  new dimensions height. If value is null or undefined it will be ignored.
     */
-    resize(el: HTMLElement, width: number, height: number)
+    resize(el: HTMLElement, width: number, height: number): void
     /**
     * Enables/Disables resizing.
     * @param {HTMLElement} el  widget to modify
     * @param {boolean} val  if true widget will be resizable.
     */
-    resizable(el: HTMLElement, val:boolean)
+    resizable(el: HTMLElement, val: boolean): void
     /**
     * Toggle the grid static state. Also toggle the grid-stack-static class.
     * @param {boolean} static_value if true the grid become static.
     */
-    set_static(static_value:boolean)
+    set_static(static_value: boolean): void
     /**
     * Updates widget position/size.
     * @param {HTMLElement} el  widget to modify
@@ -135,7 +135,7 @@ interface GridStack {
     * @param {number} width new dimensions width. If value is null or undefined it will be ignored.
     * @param {number} height  new dimensions height. If value is null or undefined it will be ignored.
     */
-    update(el: HTMLElement, x: number, y: number, width: number, height: number)
+    update(el: HTMLElement, x: number, y: number, width: number, height: number): void
     /**
     * Returns true if the height of the grid will be less the vertical constraint. Always returns true if grid doesn't have height constraint.
     * @param {number} x new position x. If value is null or undefined it will be ignored.
@@ -170,7 +170,7 @@ declare module GridStackUI {
         *@param dir 1 for asc, -1 for desc (optional)
         *@param width width of the grid. If undefined the width will be calculated automatically (optional).
         **/
-        sort(nodes:HTMLElement[], dir:number, width:number)
+        sort(nodes: HTMLElement[], dir: number, width: number): void
     }
 }
 /**