Updated README and changed error message for epsilon less than 0
Fixed typo in readme
Modified sbmrm.cpp to output w to the disk.
Merged and resolved conflicts.
Changed output format of w.
Changed FileLinearCostFunction to support human readable format of the deviation function. The format is also sparse now and variables can be presented in any order. The first line is required to contain the number of variables with the keyword numVar.
Merge branch 'master' of https://github.com/JonasKlein/sbmrm
Fixed bug: Variable numbers were not read in properly