Parsing HTTP Code according to RFC

HTTP uses \r\n for new line

 - fixes error with some 500 responses
Merge pull request #73 from mishak87/patch-4

Parsing HTTP Code according to RFC
Update README.md
version bump
fixes issue #74 isSafe and isUnsafe methods missing params
Added timeout feature and fixed digest auth bug

 - FEATURE [I #77](https://github.com/nategood/httpful/issues/77) Convenience method for setting a timeout (seconds) `$req->timeoutIn(10);`
 - FIX [I #75](https://github.com/nategood/httpful/issues/75) [I #78](https://github.com/nategood/httpful/issues/78) Bug with checking if digest auth is being used.
 - Minor README tweaks to update version and reference new download url
doh
small misspell fix
Merge pull request #79 from vlajos/master

small misspelling fix
Added proxy support
Solve a NONE/411 Squid related bug if no content-length is setted in header
Empty debug
Merge pull request #80 from ramiel/proxy_support

Added proxy support
Merge pull request #81 from ramiel/squid_bug

Squid bug
Spaces!
version bump to 0.2.5
Twitter API changes broke twitter example
Add phpunit to require-dev
Make sure to use serialized_payload length as Content-Length if the
request has a body
Merge pull request #85 from Trii/proper-content-length

Add proper Content-Length based off of the request body's length
version bump