Added a recipe for setting Node environment variables from Opsworks stack settings.
Fixed a syntax error in the variables array.
Fixed a syntax error in the template.
Fixed JSON output in the config module for Nodejs.
Removed path_to_vars from node recipe.
Fixed a syntax error in the template.
Added semicolon to the environment variable template.
Fixed a syntax error in the environment variables template. Need modules.export, not just export.
Merge pull request #29 from alleluu/develop-nb-node

Added support for Node environment variables.