initial changes to support ARC
Update README.markdown

Notice about ARC support.
regactoring: move request prop to view-controller
better .gitignore
URL Helper
add http basic auth support
request status is available for delegate
support post requests, not tested at all
keep response as string
import url-helper
remove extra lines
handle properly empty URL in web-view C-r
add small text util
PUT request support
iphone 5 detection function
change readme: information about new functions