Typos in english doc

[McFizh]

en/animation/scripting-animation.md

This document page refers to method: getComopnent .. but shouldn't it be: getComponent ?

en/animation/animation-event.md

There's something missing at the end. Current document says: "you can click ??or ??near Params" .. I think those double question marks should say the name of the button or something like that.

en/components/animation.md

At the bottom of the document: "aboutAnimation" -> "about Animation"

en/animation/index.md

"Scriting Animations" -> "Scripting Animations"

en/getting-started/basics/preview-build.md

This is my 0,02$ , but I think screenshots should be from english version of the creator. This is beginners guide to application after all :)

[jareguo]

Fixed in #219. Thanks for the feedback!