Update biom validate-table command in docs
Update 1.1.3 refs to 1.2.0

1.1.2-dev refs still need to be updated
Update version strings: 1.1.2-dev to 1.2.0
Merge pull request #196 from jrrideout/death-march

Updating version strings: 1.1.2-dev/1.1.3 to 1.2.0