add "env" to Code
allow modifying "env"
config support for php environment
add log streaming support
Merge pull request #149 from thousandsofthem/add-log-streaming

add log streaming support
Updating gems.
Reverting fix which breaks remote build in rare cases.
Merge pull request #145 from thousandsofthem/add-config-for-php

config support for php environment
Merge pull request #138 from thousandsofthem/add-env-to-code

Add env to Code