Included weighting scheme for lm(currently only done for no parameter or one double parameter
initial version of lmweight in omega,needs improvement
adding the changes of 4 to 2 constructor
Merge branch 'UnigramLMWeight' into new-lm
Removing unecessary constructor from LMWeight
Merge pull request #4 from samuelharden/new-lm

Adding support for lm in omega(initial implementation)