Upgraded to go 1.2.1 version

If merged with the master, please change the below lines [replace string **anidotnet**]:

rhc create-app mygo https://cartreflect-claytondev.rhcloud.com/reflect?github=anidotnet/openshift-go-cart in README.md

&

Website: https://github.com/anidotnet/openshift-go-cart in metadata/manifest.yml