The great redirect #78

Proposal:

The published URL of the protocol docs move to https://chromedevtools.github.io/devtools-protocol/.

• devtools-protocol repo's master branch continues to be the canonical*/reference location of the protocol files. it's issue tracker is used for protocol discussion.
• devtools-protocol repo's gh-pages branch will receive the source so it shows up online
• debugger-protocol-viewer repo's gh-pages branch gets redirects set up. See Redirect branch #77
• debugger-protocol-viewer repo's master branch will now be used for the source code of this API documentation