Remove trailing white spaces from all *.rb, *.html, *.js, *.coffee, *.css, *.scss, *.erb, *.yml, *.ru files under current directory
find . \( -name *.rb -or -name *.html -or -name *.js -or -name *.coffee -or -name *.css -or -name *.scss -or -name *.erb -or -name *.yml -or -name *.ru \) -print0 | xargs -0 sed -i '' -E "s/[[:space:]]*$//"