Added field Element divElement to class AceEditor.  Changed startEditor() method to divElement field instead of traversing DOM tree.  Result is a speed increase when DOM tree is large
fixed typo in previos commit
AceEditor implments com.google.gwt.user.client.ui.HasText
AceEditor implements com.google.gwt.user.client.TakesValue<String>
Merge pull request #7 from bmurray7/master

Added field Element divElement to class AceEditor.  Changed startEditor(...