Typos in HTML5 readme.txt

I found some typos while going through the readme.

10: "Dewelopment" should be "Development"

33: "Use this settings" should be "Use this setting"

33: "able to server your project" should be "able to serve your project"

59: "everytime the time your project" should be "every time your project"

90: "To start a web sever" should be "To start a web server"

Open the readme.txt in Engine/Build/HTML5