Merge pull request #1 from angeladelgado1/Angela

Quine_Maccluskey class
Updated gitignore file and MainWindow title
Added resource file and application logo
Added classes to handle expressions and graphs
Added Furan classes inplace of BooleanExpresion to handle expression parsing
Merge pull request #2 from angeladelgado1/JC

Added Furan classes
Organized source files in folders

To make the repository owner happy
Merge pull request #3 from angeladelgado1/JC

Organized source files in folders
Algorithm Changes
Some fixes in .pro