relax deps and prefer httpsig instead of http_signature
update to newer spec, based on httpsig implementation
Update to latest version of draft 3

  * Use (request-target) instead of (request-line)
  * Fix the tests
  * Add utils/sign3.py script to simplify adapting tests.
updated documentation
Merge pull request #1 from etoccalino/httpsig

Update to latest version of draft 3
Merge branch 'master' into httpsig

Conflicts:
	CHANGES.txt
	rest_framework_httpsignature/__init__.py
	setup.py
Merge pull request #5 from EnTeQuAk/master

Loosen dependencies, fix signature parsing regular expression
fixed dependency link of http-signature for pip installation
fix tests using re.search() instead of re.match()
added a script to test installation
bump to version 0.1.8
added a script to test installation
brought in fixes and update version
moved to httpsig for signing. upgrading package to 0.2.x
no headers is interpreted as single header "Date"
Remove duplicate dependency specifications from install_requires
Merge pull request #6 from EnTeQuAk/patch-1

Remove duplicate dependency specifications from install_requires