Updated browser versions for Chrome and Opera Mobile
Merge pull request #77 from tagawa/browser-updates

Updated browser versions for Chrome and Opera Mobile
Use new Twitter API link to developer profile pics
Updated Firefox version
Merge branch 'master' into browser-updates
Merge pull request #78 from tagawa/browser-updates

Updated Firefox version
Updated Opera version
Merge pull request #80 from tagawa/browser-updates

Updated Opera version