Docs: Add section about `httpCookies` config

Close h5bp/server-configs-iis#6.
Update LICENSE.md

Replace the Apache reference with IIS.

Close h5bp/server-configs-iis#7.
Fixing ETag.

It should be ETag not E-Tag. I tried it to make sure if it would work or not and it did not. When I had E-Tag, it was not taking in headers correctly.
Merge pull request #9 from jamierytlewski/master

Fixing ETag.
Update web.config

Removed erroneous - in etag
Update web.config

removed erroneous - in etag