change docstrings in GrammarRule.py
update documentation
update .gitignore to include header_generator.py
Made changes to some FunctionNode docstrings.
Merge branch 'master' of https://github.com/jthurst3/LOTlib
Merge branch 'master' of https://github.com/jthurst3/LOTlib
update docstrings in Hypotheses/Hypothesis.py
update docstrings in LOTlib/Hypotheses/FunctionHypothesis.py
Neatened some docstrings in FunctionNode, added some comments for potential improvements
modify docstrings in FunctionHypothesis.py and LOTHypothesis.py
Neatened some more docstrings in FunctionNode