Merge pull request #11 from xgdgsc/master

add zh_CN locale
Ring sound stored locally for offline support
Minor style changes made to the options page in order to make it more similar to chrome settings pages
Added tumblr, pinterest and stumbleupon to the blocklist
Merge pull request #17 from dmfrancisco/ring-local-feature

Ring sound stored locally for offline support
Merge pull request #18 from dmfrancisco/chrome-config-feature

Minor style changes made to the options page
Merge pull request #19 from dmfrancisco/new-defaults

Added tumblr, pinterest and stumbleupon to the blocklist