Some changes

 
 - IPython Interactive Shell added
 - __repr__ functions added
 - indentation
 - Accessing values

 ``` python
  a = Nor()
  print a # <BinPy.Nor Object Name: (NOR), A: (None), B: (None), C:(None), at memory location: (0x2e053b0)> 
 a['A'] = 0
 a['B'] = 0
 print a['C'] # True
 print a.C # <BinPy.Connector Object name:(C), value:(True), at memory location: (0x2e07490)
```