fix typos
Polyfill means it actually implements the feature

I don't see you handling CORS headers anywhere in this code. This is just an alternative, not a polyfill. For example, this is CORS polyfill I wrote 5 years ago: https://github.com/eligrey/pmxdr and https://github.com/eligrey/libxdr

Note that I follow the Access-Control-* headers.
Merge pull request #94 from eligrey/patch-1

Polyfill means that you actually implemented the feature
Merge pull request #93 from mscdex/patch-1

fix typos
Attempted fix dropbox example
fixed blob loading bug (dropbox eg) with xhook 1.2.1, fixed commonjs/amd 'xhook undefined' bug, bumped to 0.6.12
local demo changes
Update README.md
Merge pull request #98 from briangonzalez/patch-2

Update README.md
updated docs to use cdn.rawgit to solve rawgit blacklisting
attempting to fix chrome ios bug
bumped to 0.6.14, fixed #93 header casing issue (@peterjosling), updated file sizes, fixed #107 (@TheDom)
bump cdn link to 0.6.14
forgot to rebuild with new xhook (1.2.4), fixes #107 for real, using git-tag versioned cdn.rawgit links
fix bug where setting timeout too low would not trigger timeout event