added develop branch to travis config
added docs; fixes #15 and fixes #17
explicitly closed io streams for dzi file
made logging messages more cross-platform friendly
Merge branch 'master' into develop
fixed IIIF profile to reflect the 1.1 compliance status
Doh! And, of course, it would be good update the test for IIIF profile, too
updated documentation
added an iiif image api test page and kakadu license files