Added a bunch of files to the gitignore list. Added GetSkillImplementation function to Node class,
Fixed potential bug in primitive where fopen calls might not be matched with an fclose.
Merge branch 'master' of https://github.com/hayesbh/Social-Hierarchical-Learning
Began segmenting current Skill_Executor program into separate Skill Execution Server and a Web Interface components.
Skills will be executed by the skill_server (one per robot agent), using SkillExecutive instantiations. This will allow
for multiple types of skill execution method to be tested easily/rapidly.

Skill_server code compiles but is not executable yet, as there is no direct interface for the functions
Set up Skill_server backend service functions. Need to advertise service and handle status requests before it will be live.
Merge branch 'master' of https://github.com/hayesbh/Social-Hierarchical-Learning