small change to aid in NLG tasks
SIG in links fix
improve handling of criteriums with same name
remove unnecessary import
improve variable handling
Enable passing of linkgrammer linkages in r2l
documentation
Merge pull request #97 from AmeBel/SuReal

changes for surface realization(SuReal)
Merge pull request #84 from williampma/SIG_fix

SIG in links fix
Merge pull request #94 from williampma/rule_engine_improvement

Rule engine improvement
Merge pull request #95 from williampma/variable_improvement

improve variable handling
Merge branch 'master' of github.com:opencog/relex