Simple change
Merge branch 'master' of github.com:ShuoLearner/ode-solvers

Improve root find functions in CExpRKMethod.cpp

Conflicts:
	CExpRKMethod.cpp

	modified:   CExpRKMethod.cpp
	modified:   CExpRKMethod.h
	modified:   odeTest1.cpp
	modified:   odeTest2.cpp