Merge pull request #31 from walmartlabs/develop

v0.0.6
Merge pull request #34 from walmartlabs/develop

Develop
Merge pull request #35 from walmartlabs/user/eran

Images
Merge pull request #37 from walmartlabs/develop

Merge pull request #36 from walmartlabs/user/eran
fix for erroneously removed undefined as valid regex input
0.0.6-1
Merge branch 'master' of github.com:walmartlabs/joi
Merge pull request #40 from walmartlabs/develop

Readme
Update README.md
Merge pull request #42 from walmartlabs/master

Readme, bug fix