Changelog:

• Update to io.js v2.2.1.
• Add support for --log-net-log switch.
• Add support for client certificates.
• Add options to specify httpReferer and userAgent for WebContents.loadUrl.
• Add crash-reporter.getUploadedReports API.
• Fix multi-line headers in did-get-response-details.
• Fix using HTML5 fullscreen API in <webview> tag.

Linux

• Fix dialog.showSaveDialog doesn't show non-exist filename.
• Fix accessing clipboard module in renderer process.

Windows

• Add bounds payload to clicked event of Tray.