Update article.md

Grammar and phrasing changes to first paragraph. Not 100% sure didn't change meaning so am leaving it for review.

Author: paroche

2-ui/3-event-details/4-mouse-drag-and-drop/article.md

@@ -1,12 +1,12 @@
 # Drag'n'Drop with mouse events
 
-Drag'n'Drop is a great interface solution. Taking something, dragging and dropping is a clear and simple way to do many things, from copying and moving documents (as in file managers) to ordering (drop into cart).
+Drag'n'Drop is a great interface solution. Taking something and dragging and dropping it is a clear and simple way to do many things, from copying and moving documents (as in file managers) to ordering (dropping items into a cart).
 
-In the modern HTML standard there's a [section about Drag and Drop](https://html.spec.whatwg.org/multipage/interaction.html#dnd) with special events such as `dragstart`, `dragend` and so on.
+In the modern HTML standard there's a [section about Drag and Drop](https://html.spec.whatwg.org/multipage/interaction.html#dnd) with special events such as `dragstart`, `dragend`, and so on.
 
-They are interesting because they allow to solve simple tasks easily, and also allow to handle drag'n'drop of "external" files into the browser. So we can take a file in the OS file-manager and drop it into the browser window. Then JavaScript gains access to its contents.
+These events are useful in that they allow us to solve simple tasks easily. For instance, they allow us to handle the drag'n'drop of "external" files into the browser, so we can take a file in the OS file-manager and drop it into the browser window, thereby giving JavaScript access to its contents.
 
-But native Drag Events also have limitations. For instance, we can't limit dragging by a certain area. Also we can't make it "horizontal" or "vertical" only. There are other drag'n'drop tasks that can't be done using that API. Besides, mobile devices support for such events is almost non-existant.
+But native Drag Events also have limitations. For instance, we can't limit dragging by a certain area. Also we can't make it "horizontal" or "vertical" only. And there are other drag'n'drop tasks that can't be done using that API. Also, mobile devices support for such events is almost non-existant.
 
 So here we'll see how to implement Drag'n'Drop using mouse events.