Converted the implementation of connections from list to dict
Added PowerSource() and Ground() classes with documentation.
Added an example of using PowerSource() and Ground()
Added tests for PowerSource and Ground
Corrected a few bugs
Merge branch 'develop' of https://github.com/BinPy/BinPy into sources
Merge branch 'develop' of https://github.com/BinPy/BinPy into sources
Corrected representation of 1 on DigitDisplay
Merge pull request #101 from SSR09/sources

Implemented PowerSource() and Ground() with tests and Examples
Merge pull request #114 from JBeCast/digitdisplay

Corrected representation of 1 on DigitDisplay
3.x Dependencies added
3.x Dependencies added
Implemented conversion of any Boolean Expression to only NAND or NOR implementation
Also has two input gate constraint
Also has functionality of implementing only using AND, OR and NOT gates
Update docs for few 7400 series IC

7400,7402,7403,7404,7408,7410,7411,7412,7413,7415
Update series_7400.py
Made docstrings and indentation PEP8 compliant. Fixed a few typos.
merged changed
install added
travis changed
Merge pull request #119 from JBeCast/powngnd

Made docstrings and indentation PEP8 compliant. Fixed a few typos.