GNG class added
updated with the master
Merge branch 'master' into dev_azin
ComputeGNG.java updated
ComputeGNG.java updated
ComputeGNG.java updated
initDiscreteSignals method modified and seperated in DiscreteSignalsGenerator.java
ComputeGNG.java updated for initDiscreteSignals method
Merge branch 'dev_ashok' into dev_saugata
Merge branch 'dev_azin' into dev_saugata
Creating new class DoubleRing
DoubleRing.java a new probability distribution added
ComputeGNG.java, PD.java updated to make DoubleRing distribution work
Merge conflicts solved
Merge branch 'dev_ashok'

Conflicts:
	demogng-master/src/ComputeGNG.java
DoubleRing PD added in the new structure; PaintComponent has bug in it
DoubleRing.java bug solved