Merge branch 'master' of https://github.com/BinPy/BinPy
Merge branch 'master' of https://github.com/BinPy/BinPy
Merge branch 'develop'
Merge branch 'develop' of https://github.com/BinPy/BinPy
Merge pull request #220 from BinPy/develop

Merge develop into master v0.3.1
Merge pull request #222 from BinPy/develop

Make PyQt4 soft dependency
Merge branch 'develop' of https://github.com/BinPy/BinPy into develop
Merge pull request #230 from BinPy/develop

Updating master
Modified Half Adder
Removed GATES inheritance from HalfAdder
HalfAdder Modified, Test cases added for HalfAdder
Modified FullAdder Class, Removing base class GATES
Added Test cases for FullAdder
Reordering the outputs to [CARRY, SUM]
Functions renamed as per the convention
HalfSubtractor modified
Removed BCD Adder
Merge pull request #231 from salil93/develop

HalfAdder Modified
shell banner modified
README Updated