More CR cleanup

R=arv
BUG=

Review URL: https://codereview.appspot.com/11204043
property delete node from templateIteratorTable

R=arv
BUG=

Review URL: https://codereview.appspot.com/10963045
Update syntax_api.md
Update README.md
bump ChangeSummary
bump ChangeSummary
Merge pull request #130 from Polymer/master

8/1 master -> stable