Fix ID in README, add test for unmarshal-ing with invalid environment
add support for deserialization of service tags
bump go version
Merge branch 'deserialization-of-service-tags' of https://github.com/mstine/cfenv into mstine-deserialization-of-service-tags

Conflicts:
	application_test.go
Merge branch 'feature-mstine-deserialization-of-service-tags' into develop
Merge branch 'release-1.3'