Merge remote branch 'upstream/master'
Make OpenSeadragon W3C compliant.
Add showZoomControl, showHomeControl and showFullPageControl options to be able to hide specific controls. See #210
Add missing doc for buttons.
Set the rotate buttons to viewer.rotate(Left/Right)Button for coherence with other buttons.
Update tests.
Disable CORS by default.
Merge pull request #375 from avandecreme/w3cvalidator

Make OpenSeadragon W3C compliant.
Merge pull request #377 from avandecreme/cors

Disable CORS by default.
Changelog for #375
Changelog for #377
added link to open source intro guide
Improve documentation.
Merge pull request #376 from avandecreme/hide-controls

Add showZoomControl, showHomeControl and showFullPageControl options to ...
Changelog for #376 and spelling fix
Merge remote branch 'upstream/master'
Support query parameters in DZI tileSource URLs

Any query parameters that are a part of the tileSource URL are added
to the tile URLs.
Merge pull request #378 from heathn/dziQueryParams

Support query parameters in DZI tileSource URL
Changelog for #378