Merge pull request #14 from paulegan/master

Small patch to fix metadata expiration
* RPM spec and build script.  Run "make rpm" to build the RPM package(s).
Merge pull request #16 from mattjamison/master

RPM packaging for yum-s3-iam
RPM should be noarch
Merge pull request #18 from mattjamison/master

Making RPM package noarch
convert + to %2B
more complete quoting
Merge pull request #19 from jlambert121/issue_15

convert + to %2B