remove() method unsupported on DOM nodes in IE

Use removeChild() from the parent node instead.

(How I wish we'd used jQuery from the beginning...)

Fixes https://crosswalk-project.org/jira/browse/XWALK-1717
Merge pull request #113 from crosswalk-project/wiki-links-1717

remove() method unsupported on DOM nodes in IE
Move Cordova content from wiki to website