Update Chapter5.markdown
Merge pull request #30 from dhcn/master

Update Chapter5.markdown
Merge branch 'master' of https://github.com/basestyle/angularjs-cn; branch 'master' of https://github.com/coderhaoxin/angularjs-cn into coderhaoxin-master

Conflicts:
	Chapter5.markdown
第六章 操作DOM元素小节 译完