Improving code formatting docs with additional efficiency recommendations

node-cpp-skel has support for:

• a .clang-format style file that provides formatting rules (which can be modified/customized)
• make format an easy command to run to consistently format all the code (and ensure a consistent version of clang-format is available)
• a travis job that runs a check to catch when you've forgotten to format your code and in contains incorrectly formatted code (uses same clang-format version as is used locally by make format)

We can improve by adding docs/recommendations for developers for how to:

• add a git commit hook to ensure code is formatted (before pushing) - refs http://www.duskborn.com/git-pre-commit-clang-format-hook/
• integrate the mason installed clang-format with common text editors such that formatting happens during coding (like seen in https://youtu.be/uZI_Qla4pNA?t=1904)

Locate the documentation covering .clang-format, make format, and the Travis formatting check. Review the linked pre-commit hook reference and editor-integration video, then add recommendations for both workflows. Done means developers can find actionable guidance for setting up a formatting hook and configuring common editors to use the Mason-installed clang-format.