working on species -- many errors

	modified:   specie.cpp
	modified:   specie.h
Merge branch 'master' of https://github.com/abernatskiy/pdmmod
working on specie methon reactions.

errors
	modified:   Makefile
	modified:   main.cpp
	modified:   reaction.cpp
	modified:   reaction.h
	modified:   specie.cpp
	modified:   specie.h