Add withCredentials option. Fix #29
fixed #31
Merge pull request #32 from naugtur/IE8-response-fix

fixed #31
1.10.1
True by default when cors is true. #29
Merge pull request #33 from gsf/withCredentials-option

Add withCredentials option. Fix #29
1.11.0
1.12.0
normalize status code
Merge pull request #34 from bevacqua/patch-1

Normalize status code
1.13.0
added CONTRIBUTING.md
Update CONTRIBUTING.md
Merge remote-tracking branch 'upstream/master'

Conflicts:
	package.json
Explained asterisk vs credentials. closes #35