Updates scheme rule-helpers for r2l questions; a few bugs remain. . .
de-bugged and tested example sentences, documented relex errors in comments
rule-engine version 0.0

Features implemented
  -first working version of forward chaining that captures most of the new idea for forward chaining
edited for typos and minor syntax errors
Merge pull request #1048 from misgeatgit/rule-engine

rule-engine version 0.0
Merge pull request #1037 from anitzkin/schemequestionrules

addition of helper-functions for question sentences. .
added missing parenthesis
change InheritanceLink to ImplicationLink for predicates
Merge pull request #1049 from AmeBel/r2l

R2l
syntax correction
Merge pull request #1050 from AmeBel/bug-fix

syntax correction
Minor comment typos