Fix link to go-contacts example.
Merge branch 'develop' of github.com:praekelt/vumi-jssandbox-toolkit into develop
Merge branch 'feature/issue-108-basic-lightweight-models' into develop
Merge branch 'develop' of github.com:praekelt/vumi-jssandbox-toolkit into develop
Merge branch 'develop' into feature/issue-109-use-model-as-base-for-contact