Added support for credentialled cross-origin requests
Updated README with CORS + credentials example
removed semicolons
added jam install and require example
Merge branch 'add-withcredentials-support' of https://github.com/philipjrose/reqwest into credential-support

Conflicts:
	reqwest.min.js
bump version to add support for credentials
Use default callback containing timestamp to avoid IE cache issue.

Workaround for aparent cache bug IE 9 and IE 10 that breaks JSONP.
Update builds properly.
Fix horrendous typo.
Merge pull request #83 from jrf0110/master

Jam and Require
Merge pull request #89 from willwhite/callback-prefix

Use default callback containing timestamp to avoid IE cache issue.
fix amd loading
fix jsonp tests
bump version
- adds support for Promises!
- closes #81 (thanks @geowa4)
- rebuild and bump version
fixed ie10
removed extra ;
Merge pull request #90 from CartoDB/master

fixed jsonp in IE10
Update src/reqwest.js

Fix a collision with Qunit's "module" function
Merge pull request #91 from shinuza/patch-1

Fix a collision with Qunit's "module" function
check for module.exports
Kill onreadystatechange handler after readyState 4

There's a bug in WebKit where if the execution is halted (through a debugger, 
for example), an xhr object can fire the readystatechange event (with 
readyState 4) multiple times (apparently, always 3 times). For reference, 
see:

* https://github.com/madrobby/zepto/pull/633

I'm also linking to 2 jsfiddles that illustrate the issue.
I was able to reproduce this behavior on Chrome 23 and mobile Safari on iOS 5 
(using remote debugging with an iPad) but not on (desktop) Safari 6.

Steps to reproduce with first jsfiddle:

1. Open Chrome
2. Allow pop-ups 
3. Go to http://jsfiddle.net/MeXvJ/
4. Close the pop-up
5. You'll get 3 sequential alert boxes 

Steps to reproduce with second jsfiddle:

1. Open Chrome
2. Open Developer Tools
3. Go to http://jsfiddle.net/44b3P/
4. Unpause script execution in the debugger
5. You'll get 3 sequential alert boxes

Both jQuery and Zepto already do something similar to what I'm proposing. The 
difference is that they both set the onreadystatechange handler to a no-op 
function. Not sure why.

* jQuery: https://github.com/jquery/jquery/blob/master/src/ajax/xhr.js
* Zepto: https://github.com/madrobby/zepto/blob/master/src/ajax.js