Rasch model ai = 1
Rasch model a=1 linking
Update EMEstimation.cpp
Update SICSGeneralModel.cpp
Update SICSGeneralModel.h
Merge branch 'Ana' of https://github.com/jcliberatol/SICSRepository into Ana

update branch
Add OnePLModel, EM1PL
Merge pull request #8 from jcliberatol/Ana

Ana