Updated yaml-config to also allow writing of configuration files with a new method writeConfig.
Currently doing so will remove all comments in the configuration file, but otherwise appears to work well.

Also updated the run.js file to ensure the changes to writeConfig are working.  Will update with tests soon
Updated inline documentation on the use of the writeConfig and complement functions.
Cleaned up the testing code, add documentation for updateConfig in the README.md.
Also changed the code to use a test.yaml file instead of the example/app.yaml
Removed the npmignore of the test directory.  It would seem useful for validation of functionality and as a guide on how to use it.
Added newlines at the end of files
Merge pull request #7 from ornl-sava/master

Added functionality for updating a yaml configuration file