Added support for ERB template-ing through a 'load_inner' helper in script.rb; made lua scripts that start with _ protected; documented and added test case for feature
updated documentation
spread out an overly complex line and added documentation to explain why the case exists
removed extraneous fileutils command
1) Reduced available context to Lua ERB evaluation to solely methods relating to template-ing it.
2) renamed `load_inner` to `include_partial` for lua in code, tests, and documentation
3) changed script_templating_test RESULT variable from string to heredoc
Merge pull request #9 from ProctorCam/shared-lua

Shared lua code