Directory Structure: Moved scripts and rc files

Moved scripts adn rc files to seperate directories
Install Scripts: Added directory for scripts

Created directiory for all install scripts
Added Brew Script

If on Mac, osxbrew.sh will download all packages I like
RC Files: Added .gitconfig and .gitignore

Added global git config and ingnore files. Also,
linkrcs.py will create directories when linking
rc files.