[COOK-3948] port needs a value; set it to 80 as a default
[COOK-2456] config action in iis_app LWRP throws error
Merge pull request #46 from juliandunn/COOK-3948

[COOK-3948] port needs a value; set it to 80 as a default
Merge pull request #47 from juliandunn/COOK-2456

[COOK-2456] config action in iis_app LWRP throws error
[COOK-4108] - Add documentation for the 'bindings' attribute in 'iis_site' LWRP

Signed-off-by: Sean OMeara <someara@opscode.com>