fixed some dumb mistakes made while refactoring

closes issue #22
able to create windows installer, tested in win7

- created build folder with everything needed to make an MSI
- gitignore ignores generated build/dist files
- build/setup.py is used with cx_freeze
- make_msi.bat is a .bat... that makes... an msi
- clean.bat deletes build/build and build/dist
- Run_e621dl_In_Windows is the best way for windows users to run e621dl, as it prevents the automatic close that windows does
Merge branch 'iss22-ConfigCreationFailure' into develop

closes issue #22
Merge branch 'iss23-WindowsInstaller' into develop

closes issue #23