extract code from forms doc:part1
extract code from scala form doc
add little more test verificate
Merge remote-tracking branch 'upstream/master' into extract-doccode-scala-forms
extract code from global scala doc
extract code from scala xml doc
Merge pull request #1280 from XuefengWu/extract-doccode-scala-global

extract code from global scala doc
Merge pull request #1263 from XuefengWu/extract-doccode-scala-forms

Extract doccode scala forms
Merge pull request #1284 from XuefengWu/extract-doccode-scala-xml

extract code from scala xml doc