Merge pull request #1040 from zpao/react-tools-revamp

react-tools revamp
Update complementary-tools.md
Add HTML5 srcdoc property for iframes
Update complementary-tools.md
Merge pull request #1045 from spicyj/srcdoc

Add HTML5 srcdoc property for iframes
Add `noValidate` and corresponding `formNoValidate`

Fixes #988