add basic gitignore for root folder, fildering build folder and Xcode4 stuff
add basic gitignore for root folder, fildering build folder and Xcode4 stuff

git-svn-id: bd932d20d2c32fb1124b4590cfef0a39e17bad6e@5205 d3437ac4-8b1b-0410-be28-b75ab53cb89f

jterhorst/Chameleon